槽式分样器适用于（）样品的分样。
A、散装粉粒
B、水溶液
C、固体样品
D、固体悬浮物
参考答案：A
This summer I visited the farm set up by my uncle,_______he raised fifty_______.
A．there; cattle
B．where; head of cattle
C．in which; head of cattles
D．where; cattle
A．电动机
B．电磁铁
C．电扇
D．发电机
