试述电空制动控制器在制动后的中立位、空气制动阀在缓解位时的综合作用？

用词的适当形式填空。

1. Lily usually _______ (walk) to school. But she _______ (not walk) yesterday.

   Because she had a sore foot. But now she is all right. She _______ (walk) tomorrow.

2. Look! He _______ (lie) on the floor.

3. John is _______ (tall) in our class.

4. Linda _______ (babysit) her sister next Sunday.

5. He usually spends one and a half hours _______ (do) his homework every day.

6. My father _______ (cut) one watermelon just now.

7. He is _______ (good) at English than me.

8. He was late because of _______ (get) tip late.

_____ it's a little bit hard for some of us to imitate the standard English accent, we still communicate with

foreigners very well.[ ]

A. As if  

B. Even if  

C. Now that  

D. As long as

保险专业代理机构及其分支机构高级管理人员的学历要求是（）以上。

A.研究生

B.本科

C.专科

D.高中

男，30岁，右下肢无力、左下半身麻木2个月。体检：左 * * 平面以下痛、温觉减退，肌力正常。右下肢音叉振动觉、关节位置觉减退，肌力4级，腱反射亢进，引出Babinski征。

诊断应首先考虑（）

A.急性脊髓炎

B.椎管狭窄

C.脊髓空洞症

D.脊髓半横断综合征

E.脊髓亚急性联合变性

在古代人们尊称对方的妻子（）

A、令爱

B、令正

C、令尊