湿式自动喷水灭火设备的管网平时应充满有压力的水,该系统适用于常年温度不低于( )的房间。
A.4℃ B.5℃ C.8℃ D.10℃
参考答案:A
据句意和首字母提示填入所缺单词。
1. —Is t______ your pencil?
—Yes, it is.
2. —How do you s______ pencil?
—P-E-N-C-I-L.
3. What's this in E______?
4. I put my ruler, pen and e______ in the pencil case.
5. E______me. Do you know where my pen is?
对于订购时间在每月()日0时到月底的包月短信业务当月不计取包月费,如客户未退订次月开始计费。
A.15;
B.20;
C.25;
D.30;