— Could you please ______ us some stories?
— Ok. [ ]
A. say
B. talk
C. tell
D. speak
答案:C
新变压器投入运行前需进行()次冲击试验,大修后的变压器需进行()冲击试验。
风动凿岩机打眼如何标定眼位,划分区域?