对轴的削弱较严重的键联接是（）联接。

阅读理解。

     A bus stops at a small bus stop. A man is hungry and he wants to buy some cakes.

It's raining(下雨) hard, he doesn't want to go out in the rain. He sees a boy. "Come here,

boy!" he cries. "Do you know how much the cakes are?" The boy says yes. The man

gives the boy four dollars (美元)and asks him to buy two cakes. "One is for you and one

is for me." Three minutes later, the boy comes back. He's eating a cake. He gives the man

two dollars and says: "Sorry, there is only one cake left."

1. Where is the man?

A. He's near the bus.  

B. He is at home.

C. He's in the bus.  

D. He is in the car.

2. The man doesn't want to go out because_____.

A. he is tired      

B. he doesn't like rain  

C. he is hungry      

D. it's raining hard

3. How many cakes does the boy get?

A. One  

B. Two      

C. Three      

D. Four

4. How much are they if the boy buy five cakes?

A. five dollars  

B. Four dollars  

C. Ten dollars    

D. Fifteen dollars

5. What's the result (结果)?

A. The man eats the cake.

B. The boy eats the cake.

C. The boy doesn't eat the cake.

D. The boy and the man both eat the cakes.

钢筋混凝土梁底有锚板和对称配置的直锚筋所组成的受力预埋件，如图9-10（Z）所示。构件安全等级均为二级，混凝土强度等级为C35，直锚筋为616（HRB400级），已采取防止锚板弯曲变形的措施。所承受的荷载F作用点位于锚板表面中心，力的作用方向如图所示。

当不考虑地震作用组合时，该预埋件可以承受的最大荷载设计值F_max（kN）与下列何项数值最为接近（）。提示：预埋件承载力由锚筋面积控制。

A.170

B.180

C.190

D.200

简述解放CA1091型汽车前轴毂轴承紧度的调整方法。

违宪审查

交流耐压试验时，当电压升至试验电压后，要维持（）min。

A、5

B、4

C、3

D、1