继电器线圈两端并联压敏电阻的目的是()。
A.分流
B.使继电器缓吸缓放
C.延时
D.消灭火花
参考答案:D
“I don't think it's my ________that the TV blew up. I just turned it on,that's all,”said the boy.
A.error
B.mistake
C.fault
D.duty
当附着式升降脚手架停用超过()个月或遇6级以上大风复工时,应进行检查,确认合格后方可使用。
A.1.0
B.2.0
C.3.0
D.6.0