漏电保护器发生故障,必须更换合格的漏电保护器。
参考答案：对
There ______ a football match next week.
A．is going to have
B．is going to be
C．is going to build
D．is going to hold
毒性最大的抗阿米巴药是
A．氯碘喹啉
B．巴龙霉素
C．双碘喹啉
D．氯喹
E．依米丁
