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问题 单项选择题

6135AZK-4b型柴油发动机进、排气门间隙为（）。

A、进气0.28mm，排气0.58mm

B、进气0.36mm，排气0.69mm

C、进气0.25～0.30mm，排气0.30～0.35mm

D、进气0.30～0.35mm，排气0.35～0.4mm

答案

参考答案：D

选择题

— I was so sure that our experiment was going to succeed, but something went wrong at the last moment.

— ______, but don't give it up. [ ]

A. You don't mean that                

B. Find out the reason

C. Never mind                      

D. I'm sorry to hear that.
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单项选择题

使用单臂电桥时，为提高测量精度应使“比较臂”各档充分被利用。如使用QJ23型表时，若被测电阻为几欧时比例臂应选（）。

A.0.001

B.0.01

C.0.1

D.1
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