国家突发公共事件总体应急预案体系设计为( )层次。
参考答案
参考解析
【单选题】
Which of the following is a communicative task?
Reading aloud the dialogue on page 24.
Writing a party invitation to your friends.
Translating the first paragraph into Chinese.
Making sentences with the expressions given.
【单选题】
矿山井下最低中段的主水泵房和变电所的进口应装设防水门,防水门压力等级不低于( )。水仓与水泵房之间应隔开,隔墙、水仓与配水井之间的配水阀的压力等级应与防水门相同。
0.1MPa
0.5MPa
0.94MPa
5MPa