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问题 单项选择题

输油管的直径d=150mm，流量Q=16.3m3/h，油的运动黏滞系数为0.2cm2/s，每公里管长的沿程水头损失为（）。

A.0.427m

B.1.221m

C.0.026m

D.0.742m

答案

参考答案：D

单项选择题

臀大肌肌内注射，符合操作要求的是（）。

A.手持活塞抽吸药液

B.注射定位在髂嵴与尾骨联线的外1／3处

C.局部常规消毒，直径3cm以上

D.进针约为针梗长度的2／3
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听力题

Age, to most British and American people, is one of the things considered not 小题1: to ask a stranger or a person that one does not Know well. 小题2:  age, other things such as one’s income（收入）, marriage, and politics are 小题3:  not fit to ask or talk about.

There are still other  小题4:   for you to understand the westerners and to  小题5: on well with them. If you want to  小题6:   one’s bedroom, you have to ask for permission at first, and you must not open the desk or the closet in that  小题7:  . On the top of the desk, there may  小题8:   letters, business papers or other things. You must not  小题9:   up one of these and read it. It is the  小题10:   as in an office. If it is somebody else’s office, always ask, “May I come in?” and wait for the answer before entering the office.
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