影响熔剂筛分效率的主要因素为()。
A.熔剂水分
B.熔剂粒度
C.熔剂粒度组成
参考答案:A
Can you tell the ________ difference between the words "require" and "request"? I sometimes get
puzzled by their meanings. [ ]
A. dramatic
B. regional
C. apparent
D. subtle
A.用交流电压表测该电源电压时,示数是6V
B.用交流电压表测该电源电压时,示数是6V
C.用此电源给电磁打点计时器供电时,打点的时间间隔为0.01s
D.把标有“6V 3W”的小灯泡接在该电源上时,小灯泡将被烧毁