Many questions ________ at the meeting,_爱下问搜题

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问题选择题

Many questions ________ at the meeting, but he answered none.[ ]

A. came up

B. raised

C. were talked

D. asked

答案

答案：A

判断题

在发电机出口处发生短路时，两相短路稳态电流I_K2是三相短路稳态电流I_K3的 1.5倍。( )

单项选择题

细过滤器系统祛除95%直径大于或等于（）微米的颗粒

A、5

B、8

C、10

D、15