问题 单项选择题

自动切断消防电源是采取()的方法。

A.空气开关分离脱扣或切断交流接触器激磁线圈,切断着火本层非消防电源

B.火灾报警时联动全楼非消防电源跳闸

C.在消防控制室内手动直接操作

D.双电源自动转换开关

答案

参考答案:A

阅读理解

根据短文内容,判断对"√" "×"。

                                                                   A Letter

Dear Mother,

     I'm writing to you from our hotel at Golden Beach. Jim and I are on vacation with the children for

a week, we aren't happy. We are having some problems.

    The weather isn't good. It's cold and cloudy. Now I'm looking out of the window and it's raining

cats and dogs.

    Tony and Tommy aren't very happy. They are having a terrible time. They

can' t play outside. They are sitting on the bed. playing cards and watching TV.

     Jim is at the doctor's office . He has got a headache.

     We are going to be back on Thursday.

     See you soon.

                                                                                                                                             Love,

                                                                                                                                             Ethel   

( )1. Ethel and Jim are on their vacation.

(     )2. The children are very happy.

(     )3. There are many cats and dogs out of the window.

(     )4. Tom and Tommy are playing outside.

(     )5. Ethel has got a headache.

单项选择题