当货架、堆头、餐台、雪糕柜、冰柜等地方有（）时需及时补货。
A、残损
B、瑕疵
C、空缺
D、坏品
参考答案：C
. ____________ David says sounds right to Helen. That’s why she has made up her mind not to leave him _____________ happens.
A．Whatever; whatever
B．No matter how; whatever
C．No matter what; however
D．Whatever; no matter how
在电缆线路的巡视应按，电缆线路径路应每季进行（）。
A、二次
B、四次
C、三次
D、一次
