连锁装置的基本原理是:只有安全装置关合时,机器才能运转。()

题型:判断题

问题:

连锁装置的基本原理是:只有安全装置关合时,机器才能运转。()

考点:登高架设作业操作证登高架设作业(综合练习)登高架设作业(综合练习)题库
题型:判断题

在没有被破坏的地层中有关化石分布情况,下列说法中不正确的是(  )

A.古老地层中的生物化石简单、低等

B.在极古老的地层中也可找到高等生物化石

C.新近地层中的生物化石复杂、高等

D.新近的地层中也可找到低等生物化石

题型:判断题

案例摘要:《处方管理办法》自2007年5月1日起施行,进一步规范了处方管理,提高处方质量,促进合理用药,保障医疗安全。对于医院药学工作者是必须遵守和执行的。

用药差错包括()

A.处方差错

B.抄写差错

C.配方差错

D.剂量差错

E.监测差错

题型:判断题

阅读理解。

     It is hardly surprising that clothing manufacturers (生产商) follow certain uniform

standards for various features (特征) of clothes. What seems strange, however, is that the

standard adopted for women is the opposite of the one for men. Take a look at the way

your clothes button. Men's clothes tend to button from the right, and women's from the left.

Considering most of the world's population-men and women-are right-handed, the men's

standard would appear to make more sense for women. So why do women's clothes button

from the left?

     History really seems to matter here. Buttons first appeared only on the clothes of the rich

in the 17th century, when rich women were dressed by servants. For the mostly right-handed

servants, having women's shirts button from the left would be easier. On the other hand,

having men's shirt button from the right made sense, too. Most men dressed themselves,

and a sword drawn from the left with the right hand would be less likely to get caught in the

shirt.

     Today women are seldom dressed by servants, but buttoning from the left is still the

standard for them. Is it interesting? Actually, a standard, once set, resists change. At a time

when all women's shirts buttoned from the left, it would have been risky for any single

manufacturer to offer women's shirts that buttoned from the right. After all, women had

grown so used to shirts which buttoned from the left and would have to develop new habits

and skills to switch. Besides, some women might have found it socially awkward to appear

in public wearing shirts that buttoned from the right, since any one who noticed that would

believe they were wearing men's shirts.

1. What is surprising about the standard of the clothing industry?_____

A. It has been followed by the industry for over 400 years.

B. It is different for men's clothing and women's.

C. It works better with men than with women.

D. It fails to consider right-handed people.

2. Women's clothes still button from the left today because._____

A. adopting men's style is improper for women

B. manufacturers should follow standards

C. modern women dress themselves

D. customs are hard to change

3. The passage is mainly developed by_______.

A. analyzing causes

B. making comparisons

C. examining differences

D. following the time order

题型:判断题
如图为理想变压器原线圈所接交流电压的波形.原、副线圈匝数比n1:n2=10:1,串联在原线圈电路中电流表的示数为1A,下列说法正确的是(  )

A.变压器输出端所接电压表的示数为20V

B.变压器的输出功率为200W

C.变压器输出端的交流电的频率为50Hz

D.穿过变压器铁芯的磁通量变化率的最大值为20/n2Wb/s

题型:判断题

过境的不需要办理检疫审批和过境检疫手续。 ( )

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