本柜主开关出现跳闸故障时，如PLC柜开关与插座开关都正常，则是（）出现故障。
A、CPU
B、主开关
C、UPS电源
D、变频器
参考答案：C
大青叶的功效为
A．清热解毒、利湿通淋
B．清热解毒、燥湿消肿
C．清热解毒、凉血清斑
D．清热解毒、疏散风热
E．清热解毒、凉血止血
. “Would you mind telling her the news？” “_____, but I don’t know if I _____ her these days.”
A．Of course, shall see
B．Of course not, see
C．Of course, see
D．Of course not, shall see
