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问题 单项选择题

防止泵在卸货中产生气蚀现象，应采取的措施是（）。

A、调整好纵倾

B、用IGS往货舱里加压

C、A+B

答案

参考答案：C

单项选择题

肌内注射应选择髂前上棘与尾骨两点连线的（）

A.外上1/4处

B.外上1/3处

C.外上1/2处

D.中点处

E.下1/2处
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问答题

Wherefore, Bees of England, forge
Many a weapon, chain, and scourge,
That these stingless drones may spoil
The forced produce of your toil
Questions:
A. Who is the author of the poem
B. What does "Bees of England" refer to
C. What figure of speech is used here
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