使用指针式绝缘电阻表测量时,手摇要保持匀速,不可过快或过慢,使指针不停地摆动,适宜的转速为()r/min。
A.120
B.100
C.180
D.60
参考答案:A
I am not good ______ English. Will you please help me ______ it?
A. with, at B. at, to C. at, with
脾胃气虚可见
A.口淡乏味B.口甜而粘腻C.口苦D.口中泛酸E.口中酸馊