万能角度尺的游标每小格所对应的角度为()
A.1°
B.2'
C.58'
参考答案:C
Even though Lucy and Kathy are good friends, Lucy ________to lending her ID card to Kathy to
apply for a credit card. [ ]
A. stuck
B. referred
C. turned
D. objected
大容量水泵电动机采用电流互感器二次回路的()做短路保护。
A.熔断器
B.继电器
C.过流继电器
D.断路器