作业人员在库内作业时可以跨越地沟。
参考答案：错
在测量电压时，对蓄电池本身电压没有明确的要求，只要不是完全没电就行。
Though he has to ________ a hard time, he still holds a positive attitude towards life.[ ]
A. go through
B. look through
C. go by
D. see through
