A.+→
B.→+
C.+→
D.→+
答案:D
---How did you find your visit to Qingdao, Joanna?
--- ________________.
A.Oh, wonderful indeed
B.I went there alone
C.First by train and then by ship
D.A guide showed me the way
万用表实质是是一个带有整流器的()仪表。
A、磁电式
B、电磁式
C、电动式