电压继电器也分为欠电压继电器和()继电器。
A.过电压
B.过电流
C.欠电流
参考答案:A
磺脲类降糖药物中最易并发严重低血糖的是()。
A.甲苯磺丁脲
B.格列本脲
C.格列吡嗪
D.格列美脲
E.格列齐特
— Linda hasn't shown up yet.
— It's strange. She _____.[ ]
A. could
B. might
C. must have
D. should have