Have you ever found _____ flash drive has no enough space? Better replace it for ____ bigger one.   [ ]

A. the; the        

B. a; a          

C. a; the        

D. the; a

测量1Ω以下的小电阻可选（）。

A.单臂电桥

B.双臂电桥

C.万用表

D.感应式