热门试题:
[单项选择]细胞内的核糖主要分布在:()
A. 细胞质
B. 细胞核
C. 高尔基体
D. 中心体
[多选题]煤矿企业常见的职业病有( )。
A.尘肺
B.电光性眼炎
C.噪声聋
D.职业中毒
[单选题]党的十九大报告指出,()是历史的创造者,是决定党和国家前途命运的根本力量。
A.群众
B.人民
C.执政党
D.中国共产党
[单选题]当分油机要分离的油密度大时,则___ :
A. 小口径的重力环
B.大口径的重力环.
C.中转速的分油机.
D.大排量分油机
[单选题]在西门子STEP7,执行下载的命令是()。
A.Download
B.Upload
C.UploadStation
[单项选择]下列观点属于唯物主义的是()
A. 天地合而万物生,阴阳接而变化起
B. 宇宙便是吾心,吾心便是宇宙
C. 人甚至一次也不能踏进同一条河流
D. 万物在运动,但在概念中运动
[填空题]安全线向车挡方向不应采用下坡道,其有效长度一般不小于( )m。
[不定项选择题]北京市实行汽车限行,每一辆车周一到周五工作日5天内限行1天。某公司因工作需要,周一到周四要用9辆车,周五要用11辆车。如果公司能够自行选择车辆的停驶日期,那么该公司至少应有多少辆车
A.11
B.12
C.13
D.14
[单选题]男性,20岁。学生,体型瘦高,有吸烟史1年,约510根/日;在期末考试过程中突发左侧 胸痛、憋
气,伴轻咳,送就近医院急诊室,给予吸氧、心电监护等处理,HR 105次/分,RR22 次/分,血压100
/70nmHgo根据以上表现,该病人最有可能的诊断是
A. 肋间神经痛
B. 急性心绞痛
C. 急性肺炎
D. 自发性气胸
E. 肋骨骨折
[单选题]ZD(J)9型转辙机有着安全可靠的内锁功能,在两个终点位置时什么在推板套和锁闭铁的共同作用下实现了转辙机对道岔的锁闭?
A.锁块
B.滚珠丝杆
C.速动片
D.启动片
[填空题]()是指公安机关以国家的名义,依法强制剥夺违反治安管理行为人的人身自由、名誉、财产或者其它权利的行政法律制裁。
[单选题]电视会议电路传输误码率应小于( )。
A.1×10-6
B.1×10-5
C.1×10-4
D.1×10-3
[单选题]企业购买商品入库后,对于享受的现金折扣,应当( )。
A.冲减商品入账成本
B.计入营业外收入
C.冲减财务费用
D.冲减管理费用
[判断题]直流稳压电源中的变压器都起降压作用
A.正确
B.错误
[单项选择]fIDIC的组织机构中,执行委员会最多由()个成员组成。
A. 8
B. 9
C. 10
D. 11
[简答题]Do you remember all those years when scientists argued that smoking would kill us but the doubters insisted that we didn’’t know for sure That the evidence was inconclusive, the science uncertain That the antismoking lobby was out to destroy our way of life and the government should stay out of the way Lots of Americans bought that nonsense, and over three decades, some 10 million smokers went to early graves.
There are upsetting parallels today, as scientists in one wave after another try to awaken us to the growing threat of global warming. The latest was a panel from the National Academy of Sciences, enlisted by the White House, to tell us that the Earth’’s atmosphere is definitely warming and that the problem is largely man-made. The clear message is that we should get moving to protect ourselves. The president of the National Academy, Bruce Alberts, added this key point in the preface to the panel’’s report: "Science never has all the answers. But science does provide us wit
A. A.they both suffered from the government’’s negligence.
B.a lesson from the latter is applicable to the former.
C.the outcome of the latter aggravates the former.
D.both of them have turned from bad to worse.
[单选题]《运规》规定客车车轮踏面剥离长度一处时运用限度规定不得大于( )mm。
A. 20
B.30
C.40
D.50
[单项选择] Ten years ago I used to be very fit. I cycled to work during the week days and I got a lot of exercise at the weekends. I used to play tennis a lot and go for long walks. In those days I had a job in an office, but I did not have many things to do, so I didn’’t earn very much. I knew it was not a very good job but I had a lot of time to do the things I enjoyed doing.
Then, about eight years ago, I got a much better job. The pay was better. But the hours were a lot longer, too. I bought a car and drove to work every day. I began to take people out to lunch. "Expense account lunches". And I began to put on weight, too. I stopped playing tennis and going for long walks at the weekend because I just didn’’t have any time for things like that any more. There’’s a lot of stress in a job like mine. Perhaps that’’s why I started drinking more than I used to. For example, I used to have only half a glass of whisky when I got home, then I started filling the glass to the top. Then I had
A. to one’s disappointment
B. to be even worse
C. to be troublesome
D. to one’s surprise
[单选题]各种原因引起的脑水肿应首选
A.甘露醇
B.呋塞米
C.双氢克尿噻
D.高渗葡萄糖
E.山梨醇
[判断题]实施铁路安全监督检查的人员执行监督检查任务时,应当佩戴标志或者出示证件,任何单位和个人不得阻碍、干扰安全监督检查人员依法履行安全检查职责 。2018.3
A.正确
B.错误
[多选题]如果安全绳索受到( )、( )、( )、( )等情况时要停止使用 立即更换新的绳索。
A.A、冲撞
B.B、砸
C.C、刮
D.D、尖锐物切割
[单选题]横跨梁托、调整垫板孔径磨耗段修限度()。
A.≤3mm
B.≤4mm
C.≥3mm
D.≥4mm
[判断题]普速铁路区段,货物列车制动主管破损停于区间,对破损处无法处理时,司机在得到列车调度员同意后,准许在列车部分车辆无风状态下限速运行至前方站停车处理。如无风车辆超过列车的一半时列车运行速度由司机掌握。
A.正确
B.错误
[单选题](单选题)宁嗽粥的组成中不包括( )
A. 杏仁
B. 麻黄
C. 陈皮
D. 百部
[单选题]新装和增容用电均应向供电企业办理用电申请手续,填写( )。
A.用电报告
B.业务工作单
C.用电申请书
D.登记卡
[单项选择]水痘病毒属于:()
A. 疱疹病毒
B. 黄病毒
C. 棒状病毒
D. 正黏病毒
E. 副黏病毒
[单项选择]男性,35岁,急性出血坏死性胰腺炎入院,术后3天出现呼吸急促,P110次/分,Bp110/60mmHg,神志清楚,尿量250ml/24h,血Cr204μmol/L,血胆红素54μmol/L,吸入FiO250%,PaO255mmHg。此时应考虑患者处于()
A. 急性肾衰
B. ARDS
C. 急性肝功能衰竭
D. 心力衰竭
E. MODS
[判断题]熔化温度高于熔化性温度。 ( )
A.正确
B.错误
[单项选择]患者,男,36岁,自幼肌肉关节出血,牙龈出血,皮肤瘀斑;膝关节肿大,活动受限。家族史阳性。APTT98.6s,PT45.6s,TT24.6s,Fg2.6g/L,FⅧ:C2.5%,FⅧ:Ag3.0%,FⅨ:C88.0%,FⅩ:C89.3%。该患者诊断为()。
A. 血友病甲
B. 血友病乙
C. 血友病丙
D. 血管性血友病
E. 以上均不是
[填空题]两线、多线区间使用路票时,应在路票上加盖“××线行车”章(路票上的站名已能( )时除外)。
[填空题] 普通平键联接工作时,键的主要失效形式为( )受挤压破坏。
[填空题]中继阀主活塞左侧受均衡风缸和()压力的控制。
[填空题]1976年发生的“四五”运动,为粉碎江青反革命集团奠定了()基础。
[判断题]发生道路交通事故,车辆不能离开道路时,驾驶员应当设法让乘客远离事故现场,选择安全的地方等待,以防发生二次事故。
A.正确
B.错误
[不定项选择题]共用题干
患儿男,7岁。乳牙dmft为11,乳牙充填体完好。两上颌第一恒磨牙萌出1/3,左下第一恒磨牙窝沟龋。
去腐净,近中窝沟内龋洞洞底位于釉质牙本质界附近。治疗方法是
A.备工类洞银汞充填
B.垫底后充填,其余窝沟封闭
C.备工类洞垫底后光敏树脂充填
D.氧化锌丁香油糊剂安抚
E.直接流动树脂充填
[单选题]MT-2型缓冲器组装后,落锤试验不合格次数超过( )次的,则此缓冲器为不合格。
A.3
B.2
C.1
D.4
[判断题]在保证强度、钢度和使用寿命的情况下,自重系数越大就越经济。