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[判断题]PN结反向偏置时,处于导通状态,呈低电阻,正向电流大。( )
A.正确
B.错误

参考答案:B

热门试题:

第1题:[多选题]下列属于救生器材的是()。
A.A、躯体固定气囊
B.B、救生照明线
C.C、自动呼吸复苏器
D.D、手提式婴儿呼吸袋
E.E、救生气垫
参考答案:ABCDE


第2题:
[判断题]车钩由钩舌、钩体、钩舌销、钩锁、钩舌推铁和下锁销等组成。
A.正确
B.错误
参考答案:A


第3题:
[多选题]精选车间安全规定包括( )。
A.严禁烟火
B.设备安全
C.产品安全
D.人身及财产安全
参考答案:ABCD


第4题:
[单选题]在雨、雪、雾、大风等气候条件下,或在冰雪、泥浆、湿滑等路面行驶时,必须(  ),必要时增配防滑链,同时开启雾灯、“双闪”等警示灯。
A.快速通过
B.减速慢行
C.连续刹车
D.保持速度
参考答案:B


第5题:
[单选题]拆装含有硫化亚铁的设备、管线属于几级动火作业?
A.一级
B.二级
C.特级
D.不需要开动火证
参考答案:A


第6题:
[单选题]①鉴于蜂群每年损失为30%到40%,科学家和商业集团正不惜一切代价寻找能够帮助这些“花媒人”存活下去的办法 ②关于此病来源,人们说法很多,其中之一就是瓦螨 ③这种综合征会使蜂群里的工蜂突然死去,只剩下孤零零的蜂王在蜂箱里做垂死挣扎 ④最近几年,一种名为蜂群衰竭失调(CC D)的奇怪病症开始在蜜蜂王国里蔓延 ⑤这是一种长着八条腿的小寄生虫,以吸蜜蜂的血为生,还会把卵产在蜜蜂卵里将以上5个句子重新排列,语序正确的是:
A.④③②⑤①
B.④⑤①③②
C.④①③②⑤
D.④③①②⑤
参考答案:A
③中的“这种综合征”指的是④中的“CCD”,故两句应紧密相连,且顺序为④③,排除B、C。④③②⑤介绍了CCD的危害、来源,①阐述了寻找治愈这一病症办法的努力,①应置于末尾,排除D。故本题选A。

第7题:
[单选题] 最小回流比( )
A.回流量接近于零
B.在生产中有一定应用价值
C.不能用公式计算
D.是一种极限状态,可用来计算实际回流比"
参考答案:D


第8题:
[单选题]发动机点火正时的调整与混合气的浓度有关,混合气越稀,越需要将点火时间( )。
A.大量提前
B.适当推后
C.适当提前
D.保持不变
参考答案:B


第9题:
[判断题]电气设备的金属外壳接地属于工作接地。 (  )
A.正确
B.错误
参考答案:B


第10题: [单项选择]
患者小便频数黄赤3年,尿道灼热涩痛,排尿不畅,时有点滴不通,小腹胀满,大便干燥,口苦口黏,舌暗红,苔黄腻,脉滑数。B超示前列腺6.5cm×5.5cm×5cm,光滑无结节。其治法是()
A. 清热利湿,消癃通闭
B. 补脾益气,温肾利尿
C. 行气活血,通窍利尿
D. 滋补肾阴,通窍利尿
E. 温补肾阳,通窍利尿
参考答案:A
答案解析:结合患者小腹胀满,大便干燥,口苦,口黏,舌暗红,苔黄腻,脉滑数。当辨证为湿热下注证,治以清热利湿,通利膀胱。故答案选A。

第11题:
[多选题]依据《中国南方电网有限责任公司电力安全工作规程》,执行操作票操作中应做到“三禁止”:( );操作后应“三检查”:检查操作质量、检查运行方式、检查设备状况。
A.禁止监护人直接操作
B.禁止有疑问时盲目操作
C.禁止边操作边做其他无关事项
D.禁止检修人员操作
参考答案:ABC


第12题:
[判断题]绝缘夹钳工频耐压试验周期为一年。( )
A.正确
B.错误
参考答案:A


第13题:
[单选题]在电学中把供电设备统称为( )。
A.电源
B.电动势
C.电阻
D.电动机
参考答案:A


第14题:
[判断题]进站、出站、进路和通过信号机的灯光熄灭、显示不明显或显示不正确时,均视为停车信号。
A.正确
B.错误
参考答案:A


第15题: [多项选择]
Is capital market important or not Why Can you give explanation about it
参考答案:Suggested answers:
a.Capital market is very important. Take America for example, the efficiency of the U. S. capital market is legendary. Historically, virtually every major city once had a stock market, but by the AII0s there were only three major markets: New York, Chicago and San Francisco . Local markets persisted in such cities as Boston and Philadelphia, but trading was limited. Capital markets in the United States have provided much of the money—the lifeblood of capitalism—to finance the building of thousands of factories and plants, research laboratories and office buildings, airplanes and ships. It is fair to say that if capital markets did not exist in the United States, they would have had to be invented. Although in recent years much capital has been raised through bond markets and in other ways, stock markets have often proved to be useful money-raising tools for new struggling companies.
b.Capital markets are said to be efficient when they can match quickly vast numbers of stocks put forth by sellers with vast demands for stocks out forth by buyers. In part, it is a matter of technology. The modem markets, particularly those in New York and Chicago, rely heavily on computerization each day to process millions of transactions. But also, in part, it is a matter of tradition and experience. The stock market works largely on one broker’s trust in another broker’s word. The brokers, in turn depend on the faith of the customers they represent. Occasionally this trust is abused. But during the last half century, the federal government has played an increasingly important role in insisting on clean dealing and unambiguous language.
c.When we make out the importance of the capital market, we need to know something about how the stock market works. In large measure it is written from the standpoint of the small buyer and seller of stocks. But it is not hard to see how these small customers are able to interact to provide a quickly responding market. The principles of this market are similar to all others. For every buyer there has to be a seller. When more people wish to buy than to sell, the price tends to rise; when fewer people wish to buy and many wish to sell, the price tends to fall.
d.So broad is the ownership of stock shares that owners can easily follow the fortunes of the market on a daily or even hourly basis. Investors get their information in a variety of ways. If they are willing to wait until the markets close, they can simply look at the markets pages of large daily newspapers to find out what happened in the previous, trading session. There are a variety of indexes that measure market activity broadly, and individual stocks are also listed, showing the number of shares traded, the closing price, and high and low prices reached during the trading session. Certain television programs devoted to business report immediate developments in market movements. For those who insist on getting up-to-the-minute information about price movements of individual stocks, computerized services will deliver this information almost instantaneously to their homes over telephone lines.
e.Also, investors often subscribe to magazines and newsletters devoted to analyzing movements in individual stocks and the markets in general, and speculating about the future. Once a company has sold its original stock to the public and it is traded freely in the market, the price will be determined continuously during the trading day by what buyers will pay and what sellers will take. It is simply a matter of supply and demand. Thus, the price is the composite opinion of all the people who buy and sell that stock. Factors that influence how much people will pay include: The general business climate or trend, depending on the state of the overall national economy and the amount of confidence the public has in it; The amount of profit the company that issued the stock has been making, or is predicted to make, and its financial condition; The rate at which the company is growing or declining; The ability of a company to compete successfully with its rivals over a period of time; Whether the product or service is one that is popular, and whether the market for that product or service is growing or decreasing; The general interest rate, or the market price for bonds; The rate of return the company offers compare do the rate of return on alternative investments.
f.We need to know the importance of dividends. As previously noted in a different context, when a company makes money it usually pays a part of its earnings to its shareholders in the form of dividends. A typical payout is about E0 percent of the earnings. Thus, if a company made $B0 million in a year and if there were E million shares of stock in the company, each shareowner would receive $B per share. If one owned A00 shares, the dividend would be $B00. To carry the arithmetic a step further, if a stock sold at $D0 per share and yielded a $B dividend, the rate of return per share would be E percent.
答案解析:[解析] broker经纪人。context上下文,脉络,前后情况。 capital market资本市场。bond债券,公债。stock股本,股票。composite opinion综合意见。div

第16题:
[单选题]关于膀胱三角描述,正确的是
A.位于膀胱体部内面
B.粘膜与粘膜下层相连
C.此处粘膜平滑无皱襞
D.膀胱空虚时,粘膜形成许多皱襞
E.不是肿瘤的好发部位
参考答案:C


第17题: [单项选择]
分娩结束时子宫重量为
A. 900g
B. 950g
C. 1200g
D. 1000g
E. 1100g
参考答案:D

第18题:
[判断题]一般来说,爆炸极限范围越宽,则爆炸危险性越大。
A.正确
B.错误
参考答案:A


第19题:
[填空题]凝汽器真空降低时,容易过负荷的级段为()。
参考答案:(末级)


第20题:
[单选题]下穿铁路桥梁、涵洞的道路,当桥涵净高小于() m 时,应当按照国家标准设置限 高防护架和车辆通过限高、限宽标志。
A. 3
B.4
C. 5
D.6
参考答案:C


第21题: [单项选择]
工程项目的初步设计和施工图设计应在( )完成。
A. 工程项目策划和决策阶段
B. 工程项目准备阶段
C. 工程项目实施阶段
D. 工程项目竣工验收阶段
参考答案:B

第22题:
[判断题]持有其他抚恤证的人员,如革命工作人员残疾证,参战民兵、民工残疾证等,均不能享受减价待遇。
A.正确
B.错误
参考答案:A


第23题: [单项选择]
设想没有运动的物质的观点是()。
A. 客观唯心主义
B. 形而上学唯物主义
C. 庸俗唯物主义
D. 主观唯心主义
参考答案:C
答案解析:

形而上学的观点就是否认运动和发展的观点,因而看不见物质的运动性。



第24题:
[判断题]*必需汽蚀余量表示为防止泵内汽蚀,在泵吸入口截面液体所必需有的最小汽蚀余量值。()
A.正确
B.错误
参考答案:A


第25题: [单项选择]
“开始→访前准备→走访客户→做好记录→跟踪落实→结束”,按以上流程开展的营销部业务是()
A. 开发新客户
B. 处理投诉
C. 公关访问
D. 销售访问
参考答案:D

第26题:
[单选题]突出抓好干部和消防员骨干训练。落实干部消防员分训、( )。
A.骨干抓训
B.骨干组训
C.干部抓训
D.干部组训
参考答案:B


第27题: [单项选择]
对于自主神经系统,下列哪种情况错误()
A. 内脏器官均受交感及副交感神经双重支配
B. 活动时交感神经系统起主要作用
C. 休息时副交感神经系统起主要作用
D. 自主神经系统不受大脑皮质支配
E. 自主神经系统由交感及副交感神经系统组成
参考答案:D

第28题: [单项选择]
某县人民法院在审理一起诈骗案时,因公诉人发现案件需要补充侦查,合议庭曾两次决定延期审理。县人民法院第二次恢复法庭审理后,公诉人又提出案件需要进一步补充侦查。合议庭应当作出何种处理?
A. 同意延期审理
B. 不同意延期审理
C. 根据案件复杂情况,决定是否延期审理
D. 报本院审判委员会决定是否延期审理
参考答案:B

第29题: [单项选择]
输卵管绝育术的作用是
A. 抑制排卵
B. 杀灭精子
C. 阻止精子与卵子相遇
D. 降低宫颈粘液的粘稠度
E. 降低精子存活率
参考答案:C

第30题:[单选题]第 291 题, 本小题 1 分
电力生产人身事故中,特大人身事故是一次事故死亡()人以上。
A. 3
B. 5
C. 10
D. 20
参考答案:C


第31题: [单项选择]
在项目建设方案的资源利用评价中,对节材的评价包括项目建设期土建工程投资、()投资等涉及的材料节约方案评价。
A. 购置原材料
B. 新工艺
C. 设备安装
D. 节约用地
参考答案:C

第32题:
[单选题]国际电信世界大会上,审议具有24年历史的《国际电信规则》是一个巨大的挑战,因为要确保它能_,适应新一代信息通信技术用户的需求和全球化、激烈竞争和创新不断加深的技术环境。 填入画横线部分最恰当的一项是(____)。
A.与时俱进
B.推陈出新
C.破旧立新
D.精益求精
参考答案:A
文段填入的词语是对横线后面的语句的解释。从“适应”一词可以判断填入的词语的语意是要能跟随信息通信技术的变化,A项的“与时俱进”最能表达这一语意。故本题选A。

第33题: [简答题]
账户因成交不卖出现冻结7天的处罚,该如何避免?
参考答案: 1、调整产品备货期,避免冻结7天处罚
2、密切关注产品的库存情况,出现断货及时下架

第34题: [单项选择]
正常情况下在眼表的泪液中球蛋白占的比例()
A. 10%
B. 20%
C. 40%
D. 60%
E. 75%
参考答案:B

第35题: [单项选择]
27岁初孕妇,妊娠38周,患重度妊娠高血压综合征,昨晚突然出现阴道流血伴下腹痛,最可能的诊断应是()
A. 前置胎盘 
B. 羊水过多 
C. 胎盘早剥 
D. 先兆子宫破裂 
E. 子宫破裂
参考答案:D

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