公安消防部队在完成经常性执勤任务时所保持的战斗准备状态为（）。A、一级战备 B、二

阅读理解。

       This is a picture of Tina's family. Tina is a student. She is in a red dress today. Her coat is blue. The

man in brown shirt is Tina's father,Mr Black. He's a policeman. The woman is Tina'smother, Mrs Black.

She is in a red hat. She is a nurse. The boy is Tina's brother, Jim.  He is in black jacket and green trousers.

He is a student, too.

1. Tina's dress is____.[ ]

A．red    

B．blue    

C．brown

2.  Tina's father is a____.[ ]

A. driver    

B. worker    

C. policeman

3. Tina is Jim's          .[ ]

A. friend    

B. brother    

C. sister

4. What's Mrs Black's job?[ ]

A. Doctor.      

B. Nurse.      

C. Teacher.

5. Jim is in _____ jacket.[ ]

A. black    

B. blue    

C. green

按照《公约》的规定，发盘( )。

A．可以撤销但不能撤回

B．可以撤回但不能撤销

C．既不能撤销也不能撤回

D．既可以撤回也可以撤销

肝脏每天分泌胆汁量为

A．100～300ml

B．300～600ml

C．600～1 000ml

D．1 000～1 500ml

E．1 500～2 000ml

朱砂安神丸、天王补心丹、牡蛎散三方主治证中均可见（）

A.自汗、盗汗

B.大便干结，小便短赤

C.口舌生疮，面红目赤

D.心悸怔忡

E.头晕目眩，怔忡健忘

请问什么是一次设备？