顶板暴露的面积越大,顶板压力() A.不变 B.越大 C.越低

题型:单项选择题

问题:

顶板暴露的面积越大,顶板压力()

A.不变

B.越大

C.越低

考点:煤矿企业负责人煤矿安全生产管理人员煤矿安全生产管理人员题库
题型:单项选择题

Dear Michael,

I’m very glad to be your pen-friend. My name is Li Tian, and my English name is Leo. I’m from Wuhan. It’s in the middle of China. I’m in the Number 3 Middle School. There are 55 students in my class, and 28 are boys. From Monday to Friday, we have Chinese, math, physics and P.E. in the morning. I like Chinese and physics, because they’re interesting. I don’t like math. It’s too boring. At noon, I have to have lunch at school because my home is far from my school. We usually have two classes in the afternoon. After school , I like watching TV and listening to the music. I also like playing football, but not the American football.

Please write to me soon.

Yours,

Leo

小题1:This letter is for_____.

A.Leo

B.Mike

C.Li Tian

D.Michael小题2:There are _____girls in Leo’s class.

A.55

B.28

C.27

D.50小题3:How many classes does Leo g have every weekday(工作日)?

A.Four.

B.Five.

C.Two.

D.Six小题4:Where is Leo from?  He is from ______.

A.America

B.A middle part of China

C.Brazil

D.England

题型:单项选择题

图书馆里原有20人,又进来B人,出去C人后,还有______人.

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It is not who is right but what is right___is of importance.

A.which

B.it

C.that

D.this

题型:单项选择题

秦王赢政读韩非书,感叹曰:“寡人得见此人,与之游,死不恨矣。”你认为赢政此次感叹的主要原因是:

A.韩非子主张君主专制,中央集权

B.韩非子主张“法不阿贵”,“以法为本”

C.韩非子以为今胜于昔,“世异则事异,事异则备变”

D.韩非子提出“富国以农”,以为耕可以富,战可得以贵

题型:单项选择题

服用磺胺类药物时,加服小苏打的目的是( )。

A.增强抗菌疗效

B.加快药物吸收

C.防止过敏反应

D.防止药物排泄过快

E.使尿偏碱性,增加药物的溶解度

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