通用航空机场的《机场使用细则》由（）编印。A.民航局航行情报中心 B.地区管理局航行

试述综合开采曲线的编制方法及用途？

如图所示，在倾角为α的斜面上，重为G的小球被竖直的木板挡住，不计一切摩擦，则小球对斜面的压力为______，小球对木板的压力为______．

The clock struck eleven at night. The whole house was quiet. Everyone was in bed except me. Under the strong light, I looked sadly before a huge pile of troublesome things they call “books”.

I was going to have my examination the next day. “When can I go to bed?” I asked myself. I didn’t answer, in fact I dared not.

The clock struck 12. “Oh, dear!” I cried, “ten more books to read before I can go to bed!” We pupils are the most wretched(可怜的) creatures in the world. Dad does not agree with me on this. He did not have to work so hard when he was a boy.

The clock struck one. I was quite hopeless now. I forgot all I had learnt. I was too tired to go on. I did the only thing I could. I prayed, “Oh, God, Please help me pass the exam tomorrow. I do promise to work hard afterwards, Amen.” My eyes were heavy, so heavy that I could hardly open them. A few minutes later, with my head on the desk, I fell asleep.

小题1:When the author was going over his lessons, all the others in the house were_____ .

A．asleep

B．working

C．outside

D．watching TV小题2:Reviewing his lessons didn’t help him at all because ____________.

A．he thought it was useless doing this at night

B．his parents were not able to help him

C．his eyes were so heavy that he couldn’t keep them open

D．he hadn’t studied hard before the examination小题3: What do you suppose happened to the author later？

A．He went to a church to pray again

B．He passed the exam by luck

C．He failed in the exam

D．He was punished by his teacher

我国会计制度规定，企业的资产负债表一般采用( )。

A．报告式

B．账产式

C．垂直式

D．多步式

类风湿关节炎的X线表现是什么？