蚯蚓可以改良土壤,对植物的生长很有好处。[ ]
√
You look very tired, why not ______________ a rest? [ ]
A. to stop to have
B. stop to have
C. stop having
D. to stop having
对于关键物料突然停止,短时间可以采用()的处理方法。
A、降量待料
B、停车待料
C、正常生产待料
D、不用处理