28、药物稳定性试验方法用于新药申请需做 A．影响因素试验 B．加速试验 C．经典恒

根据短文内容，判断正（T）误（F）。

     I have always heard that walking under a ladder brings bad luck, but I've never thought so. I have

walked under ladders many times, but I have never met anything bad before. It's the same with black

cats. People say if a black cat crosses before you, it means bad luck. I have never thought that until this

afternoon. But ever since I heard my student Sam's story, I've begun thinking about whether it was true.

     This afternoon, Sam was walking down the street thinking about something, so he wasn't paying

attention to (注意到) where he was going. He walked right under a ladder standing against (倚着) a

building. A black cat ran out of a door just at that moment, and Sam fell over it. His head hit the ladder.

A man washing the window was at the top of that ladder and the dirty water went down through the air.

Poor Sam! He got wet all over.

( )1. At first, the writer believed that walking under a ladder would bring bad luck.

(     )2. A black cat crossing will bring you good luck when you are walking.

(     )3. That afternoon, the writer's son Sam was walking down the street thinking about something.

(     )4. There was a man washing the window near the door.

(     )5. Sam had bad luck that afternoon.

若不等式（a-2）x＞2-a的解集是x＜-1，则a的取值范围是（　　）

A．a≤2

B．a＞2

C．a＜2

D．a＜0

该患者最佳治疗方法是

A．观察

B．补液抗炎

C．急诊手术治疗

D．对症治疗

E．中药治疗

机车A拉着一节车厢B向右行驶。用F_AB和F_BA分别表示A对B和B对A的作用力，则F_AB和F_BA的大小关系是

A．F_AB>F_BA

B．F_AB<F_BA

C．F_AB=F_BA

D．无法确定

（EMB145）更换燃油泵是否要求排放燃油（）

A.是

B.不是，该泵装在干舱（有独立的单向活门）

C.不是，该泵接近面板装在机翼上表面