热门试题:
[不定项选择题]根据资本资产定价模型在资源配置方面的应用, 以下正确的有( )。
Ⅰ.牛市到来时,应选择那些低p系数的证券或组合
Ⅱ.牛市到来时,应选择那些高p系数的证券或组合
Ⅲ.熊市到来之际,应选择那些低p系数的证券或组合
Ⅳ.熊市到来之际,应选择那些高p系数的证券或组合
A.A:Ⅰ.Ⅲ
B.B:Ⅱ.Ⅲ
C.C:Ⅱ.Ⅳ
D.D:Ⅰ.Ⅳ
[单项选择]
Americans believe time is a limited resource; they try to conserve and manage it. People in the U.S. often (31) seminars or read books on time management. It seems they all want to (32) their time better. Professionals carry around pocket planners-some in electronic form--to keep (33) of appointments and deadlines. People do all they can to (34) more life out of their time. The early American hero Benjamin Franklin expressed this (35) best: "Do you love life Then do not waste time, for that is the (36) life is made of."
To Americans, punctuality is a (37) of showing respect for other people’s time. (38) more than 10 minutes late to an appointment usually (39) an apology, and maybe an explanation. People who are running late often call (40) to let others know of the delay. Of course, the less (41) the situation, the less important it is to be exactly on time. At informal get-togeth
A. to fix
B. to have fixed
C. fixing
D. to be fixed
[单项选择]某中年男患者因心脏病发作被送到急诊室,症状及检查结果均明确提示心肌梗死。患者此时很清醒,但由于费用等原因,患者拒绝住院,坚持回家。此时医生应该()
A. 尊重患者自主权,同意他回家,医生无任何责任
B. 尊重患者自主权,但应尽力劝导患者住院,无效时办好相关手续
C. 尊重患者自主权,但应尽力劝导患者住院,无效时行使干涉权
D. 行使医生自主权,为救治患者强行留患者住院
E. 行使医生特殊干涉权,强行把患者留在医院
[单选题]用纯溶剂逆流吸收混合气中的溶质,符合亨利定律。当入塔气体浓度上升[属低浓度范围]其他入塔条件不变,则气体出塔浓度ya和吸收率η为()
A.ya↑,η↓
B.ya↓,η↑
C.ya↑,η不变
D.ya↑,η变化不确定
[单项选择]货币政策传导机制是指中央银行根据货币政策最终目标,运用货币政策工具,通过金融机构的经营活动和金融市场传导到企业和居民,对其()等产生影响的过程。
A. 存款和储蓄
B. 心理预期
C. 投资和消费
D. 生产和生活
[判断题]穿墙套管渗漏油或过热处理原则要求套管油位异常时,应利用红外测温装置检测油位,向值班调控人员申请停运处理。
A.正确
B.错误
[判断题] 耐热钢不能采用二氧化碳气体保护焊焊接。
A.正确
B.错误
[单项选择]Java语言的许多特点中,下列( )特点是C++语言所不具备的。
A. 高性能
B. 跨平台
C. 面向对象
D. 有类库
[单项选择]In the Jamaican tourist realm, the rich American tourists ______.
A. behave the way the old colonists did
B. are actually the supreme privileged masters
C. are well-mannered and quiet visitors among the natives
D. share the good services in the micro-colony with the Jamaicans
[单项选择]食品添加剂使用标准的国家标准号是()。
A. GB.2760-2011
B. GB.2761-2005
C. GB.2712-2003
D. GB.2711-2003
[单选题]由黄连、半夏、瓜蒌实组成的方剂是
A.大陷胸汤
B.滚痰丸
C.小陷胸汤
D.清气化痰丸
E.半夏泻心汤
[判断题]电流互感器分为测量用电流互感器和保护用电流互感器。( )
A.正确
B.错误
[单项选择]报关单位在进口列入《限制进口可用作原料的废物目录》及《自动进口许可证管理类可用作原料的废物目录》的废物时,在向海关申报时应当提交“废物进口许可证”。国家规定如果进口未列入上述目录的废物应( )。
A. 禁止进口
B. 不需申领批准证书,但需交验“入境货物通关单”
C. 仍需申领批准证书
D. 不需批件,自由进口
[单项选择]维生素B12缺乏与叶酸缺乏所致营养性巨幼红细胞贫血临床表现的主要区别点是()
A. 骨髓象改变
B. 神经系统症状
C. 肝、脾大
D. 贫血症状
E. 血常规改变
[判断题]正常生产时,任何燃烧室可以一侧用贫煤气加热,而另一侧用富煤气加热
A.正确
B.错误
[单选题]哪个是PD-L1 抑制剂
A.pembrolizumab
B.sintilimab
C.Nivolumab
D.atezolizumab
[单选题]1.20 小、微型出租客运汽车使用_______,中型出租客运汽车使用_______,大型出租客运汽车使用_______。
A.8年;10年;12年
B.8年;10年;10年
C.10年;10年;12年
D.10年;12年;15年
[单选题] 教师在备课时,要想准确把握教学难点,必须首先( )
A. 备教材、备学生
B. 备学生、备重点
C. 备教材、备教法
D. 备教法、备重点
[单项选择]
Many deaths from home fires are the result of burns and panic, but most are caused by deadly smoke and gases. These fatal fires are often caused by such careless acts as throwing away a lighted match or cigarette, allowing rubbish to pile up, overloading electrical wires, or misuse of heating and cooking equipment.
Few families go to bed at night without first checking to make sure that the doors and windows are locked, but they overlook a very basic fire safety rule. This rule states that people should sleep with their bedroom doors closed. Nighttime fires are most serious because the family is asleep and the discovery of fire is usually too late.
A closed bedroom door gives extra protection by delaying the gases and fire, thus giving the family a few minutes to escape.
At the first sight of fire in a home, it is necessary for everyone to get out of the house, especially children and elderly persons who may need help.
Not everyone flees (逃
A. not to collect valuable possession if a fire breaks out
B. not to call the fire department for small fires
C. not to run away at once
D. not to buy a house with closets
[单项选择]闸阀不适合用于()的场合。
A. 接通介质流量
B. 阻断介质流量
C. 调节介质流量
D. 改变介质流向
[单选题]射水器材是将水带输送来的压力水变为高速射流,并以直流喷雾或伞状水幕等不同水流状态喷射至一定距离进行灭火的工具。主要指 ( )
A.水枪和吸水管
B.水枪和水带
C.水枪和水炮
D.吸水管和水带
[多选题]第 556 题, 本小题 1 分
一只三相电压互感器或者由三只或两只单相电压互感器连接接线方式一般有(____)接线方式。
A. V/v12
B. V/v0
C. Y/yn0
D. YN/yn0
[判断题] 以同样速度飞行,转弯比直线飞行迎角大。
A.正确
B.错误
[单选题] 1号线二期车站UPS蓄电池型号是( )。
A.HZB12-200
B.HZB12-160
C.NPL210-12
[单选题]按照滑行理论,安静时阻碍肌纤蛋白同横桥结合的物质是
A.肌凝蛋白
B.原肌凝蛋白
C.肌钙蛋白Ⅱ
D.肌钙蛋白I
E.肌纤蛋白
[单选题]高速铁路钢轨打磨分为预打磨、预防性打磨、( )打磨。
A.维护性
B.修理性
C.保护性
D.针对性
[单项选择]早期胃癌的概念是()。
A. 肿块直径在2cm以下
B. 只限于粘膜层
C. 未侵及肌层
D. 无淋巴结转移
E. 无远纵隔淋巴结转移
[单选题]如将电阻分别为R1=400Ω,R2=100Ω的两只电热器并联,接在220V的电源上,可知并联电路总电流为( )。
A.0.75A
B.1.75A
C.2.75A
D.3.75A
[单选题]( )措施是防治尘肺的根本措施。
A.工程技术
B.个体防护
C.教育培训
[单项选择]Many Americans harbor a grossly distorted and exaggerated view of most of the risks surrounding food. Fergus Clydesdale, head of the department of food science and nutrition at the University of Massachusetts-Amherst, says bluntly that if the dangers from bacterially contaminated chicken were as great as some people believe, "the streets would be littered with people lying here and there."
Though the public increasingly demands no-risk food, there is no such thing. Bruce Ames, chairman of the biochemistry department at the University of California, Berkeley, points out that up to 10% of a plant’s weight is made up of natural pesticide (杀虫剂). Says he, "Since plants do not have jaws or teeth to protect themselves, they employ chemical warfare." And many naturally produced chemicals, though occurring in tiny amounts, prove in laboratory tests to be strong carcinogens—a substance that can cause cancer. Mushrooms (蘑菇) might be banned if they were judged by the same standards that apply
A. They overlook the risks of the food they eat.
B. They overestimate the hazards of their food.
C. They are overoptimistic about the safety of their food.
D. They overstate the government’s interference with the food industry.
[单选题] 万用表的表头是一个()测量机构。
A.电磁式
B.磁电式
C.电动式
D.感应式
[判断题]变速箱到换向箱的动力传递固定轴由法兰、轴承、轴承座、密封等组成。( )
A.正确
B.错误
[判断题]部分照明消防车配备远距离无线遥控操作系统,可在200m范围内遥控操作。( )
A.正确
B.错误
[多选题]消防设施是指火灾自动报警系统.自动灭火系统以及以下哪些设施?( )
A.消火栓系统
B.防烟排烟系统
C.应急广播
D.应急照明设施
E.安全疏散设施
[单选题]智力的三元理论的提出者是( )
A.阜南
B.吉尔福特
C.斯腾伯格
D.鲁利亚
[多选题]在变电站高压设备区或高压室内搬动梯子应( )。
A.与带电部位保持一定距离
B.与带电部分保持安全距离
C.放倒两人搬运
D.两人倾斜搬运
E.$放倒后由一人搬运
[单选题]大案例十
事故经过:
12月9日至11日,XX供电局按照年度计划开展500kV青山乙线停电检修,检修结束后计划开展地线融冰试验。
12月12日8时左右,XX供电局向总调申请开展500kV青山乙线地线融冰试验,并得到总调的许可。
8时36分,工作负责人杜某义通知运检人员张某,500kV青山乙线已转接地状态。
13时50分,张某作为线路工作派工单第一小组负责人,带领组员杨某铭和邹某到500kV青山乙线21#塔做工作准备。14时40分,张某上塔装设地线至A相导线的引流线,并拉开21#塔地线刀闸,为21#-114#地线融冰试验做准备。 随后,变电站侧操作融冰装置对线路加压加流进行融冰。在21#-114#地线融冰试验过程中,地面观测人员发现两侧地线温度有1度左右偏差,为防止地线开路导致地线损伤,停止了该段试验。变电站侧融冰装置停运后,于16时16分又继续开展114#-226#塔地线融冰试验接线;同时为验证21#-114#塔地线绝缘是否良好,保持了21#地线大号侧与导线A相连接线。
16时28分,杨某铭给陈某(线路工区副主任,主持工作)打电话,核实是否可以上塔工作,陈某强调不要上塔。杨某铭随即告诉张某暂时不要登塔,但张某仍独自登上21#塔去拆除大号侧引流线。
16时36分,变电站侧操作融冰装置对线路再次加压,开展114#-226#塔地线融冰试验。此时,地面人员发现位于导线横担上的张某触电,随即通知独山变电站断开融冰装置电源。16时55分,现场人员进行现场急救,并拨打120急救电话。17时52分,经医务人员检查确认张某死亡。(判断题)案例中工作负责人杜某义在作业前可不对张某、杨某铭和邹某进行安全交代( )。
A.正确
B.错误
[填空题]鸡蛋有一定的免疫活性、对病毒有抑制作用的物质是______。
[多选题]指挥员除一般心理训练外,还应进行( )等心理训练。
A.学习灭火救援战术理论;
B.研究战术和战例;
C.完成想定作业;
D.进行战术演练;
E.实战模拟训练;