测量电压时应将万用表接在被测电路两端。选取的电压量程,应尽量使表针偏转到满刻度的()。
A.1/2或1/3
B.1/3或3/4
C.1/2或1/4
D.1/2或2/3
参考答案:D
—Are there any English story books for us students in the library?
—There are only a few, ____________.
A.if any
B.if some
C.if have
D.if has
哪种情况不是炎症病变所引起的()
A.输卵管卵巢囊肿
B.输卵管积水
C.卵巢巧克力囊肿
D.输卵管呈腊肠样变
E.输卵管伞端闭锁