消防装备管理的实质是对防火灭火及救援设备的全程服务。
参考答案:对
数列{an}为等差数列,且a1+a4=24,a3+a6=9,则a2+a5=______.
连词成句。
1. make you the bed can
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2. have tomatoes mutton and I
.
3. can what do you
4. can't computer Robot a use
5. helpful is she home at