乘坐物有翻滚动作的游乐设施,其乘人的肩式压杠应有()套可靠的锁紧装置。A、1 B、2C

题型:单项选择题

问题:

乘坐物有翻滚动作的游乐设施,其乘人的肩式压杠应有()套可靠的锁紧装置。

A、1

B、2

C、3

D、无要求

考点:特种设备相关管理大型游乐设施安全管理大型游乐设施安全管理题库
题型:单项选择题

胎膜早破是指()。

A.胎膜在临产前破裂

B.胎膜在潜伏期破裂

C.胎膜破裂发生在活跃期

D.胎膜破裂发生在第一产程末

E.胎膜破裂发生在第二产程末

题型:单项选择题

一般情况下,机械失效率是随时间变化的,它的变化可以明显的分为( )个阶段。

A.2

B.3

C.4

D.5

题型:单项选择题

The following data sufficiency problems consist of a question and two statements, labeled (1) and (2), in which certain data are given. You have to decide whether the data given in the statements are sufficient for answering the question. Using the data given in the statements plus your knowledge of mathematics and everyday facts (such as the number of days in July or the meaning of counterclockwise), you must indicate whether.

Is the value of x3y-x2y2+xy3 equal to 0 ?()
(1) x=0
(2) y=0

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.

B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.

C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.

D. EACH statement ALONE is sufficient.

E. Statements (1) and (2) TOGETHER are NOT sufficient.

题型:单项选择题

对于广电媒介产业化的理论研究中,人大学派是比较突出的有几个代表,其中题为《电视媒介经济学》著作的作者是()。

A.喻国明

B.周鸿铎

C.吴克宇

D.黄升民

题型:单项选择题

两点间的电压具有()。

A、3个数值

B、唯一确定的数值

C、2个数值

D、4个数值

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