严禁在()安装直接排气式燃气热水器。
A、浴室内
B、厨房内
C、饮水间内
D、开水间内
参考答案:A
Customs duties shall not be reduced or exempted on goods imported from or exported out of ______.
A.special economic zones B.coastal eiiesC.chinese-foreign joint ventures D.foreign wholly-owned enterprises
()应对自动喷水灭火系统的报警阀进行放水试验,检测启动性能。
A、每年
B、每季度
C、每星期
D、每月