过期儿指胎龄为
A.>40周
B.≥42周
C.>42周
D.≥41周
E.≥43周
参考答案:B
-- Why bother? There is too much rubbish here. You’ll never pick it all up.
--- Maybe not. But at least this part of the park cleaner.
A.was
B.will be
C.had been
D.is
电缆直流耐压及泄漏电流试验时,为何要在高压侧直接测量泄漏电流?