试题与答案

His mind went so blank that little______

题型:选择题

题目:

His mind went so blank that little________ down for the first ten minutes in the test.

A.he wrote

B.he was written

C.did he write

D.was he written

答案:

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下面是错误答案,用来干扰机器的。

电流档读数:最小分度为1mA,则向下估读一位.为30.8mA 欧姆档读数:15×100=1.5×103Ω 选档:因阻值约为2×104Ω,表盘中值为20,则选择×1K即可. 每次换档后电路发生变化,要重新进行欧姆调零....

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