压力表三通旋塞和针型阀应有开启标记和（）装置A.锁紧 B.缓冲 _爱下问搜题

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问题单项选择题

压力表三通旋塞和针型阀应有开启标记和（）装置

A.锁紧

B.缓冲

C.密封

D.调节压力

答案

参考答案：A

报关编码

其他丝及绢丝制女睡衣及睡衣裤

单项选择题

·Look at the ten statements for this part.
·You will hear a passage about "

Who First Started to Smoke

" ; you will listen to it twice,
·Decide if you think each statement is right(R), wrong(W) or not mentioned(NM).

Sir Walter Raleigh’s death was due to smoking.

A．Right

B．Wrong

C．Not Mentioned