对于万有引力的表达式F=G,下列说法正确的是 A.公式中的G为万有引力常量,它是

题型:选择题

问题:

对于万有引力的表达式F=G,下列说法正确的是    

A.公式中的G为万有引力常量,它是由实验得出的,而不是人为规定的

B.当r趋近于零时,万有引力趋近于无穷大

C.m1和m2受到的引力总是大小相等,而与m1、m2是否相等无关

D.m1与m2受到的引力总是大小相等、方向相反,是一对平衡力

考点:万有引力定律
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根据对话内容,从方框中选出5个最佳选项补全对话
( A: Adam    B: Bill )
A: Hi, Bill! You’re reading the novel again.
B: Yes, Tom. I’ll never be tired of it.
A:   小题1:     
B: Three times. Every time I read it, I can always learn something new.
A: Really?   小题2:  
B: Charles Dickens. I think he is a great English writer. What about you?
A:   小题3:  He is also my favorite foreign writer. Please let me have a look at it.
B: OK, here you are! What do you think of this novel?
A:   小题4: I haven’t seen such a novel for long. Where did you buy it?
B: In the Rose Bookshop.
A: I don’t know where it is.   小题5:  
B: No. Only 10 minutes walk from here, next to the People’s Cinema.
A: Oh, I see. I’m going there to get one, too. Thank you!
B: You’re welcome!
A. It’s exciting.
B. How can I get there?
C. How many times have you read it?
D. So do I.
E. Who wrote it?
F. Is it far from here?
题型:选择题

从《伤仲永》最后一段的议论看,作者通过方仲永5岁到20岁才能发展变化的故事,意在说明什么道理? 

  _________________________________________________________________________________________ 

题型:选择题

患者,女性,20岁,56kg。从五楼坠下,致右肱骨干、右股骨干、右小腿骨折,多处软组织挫伤。查BP50/30mmHg,HR135次/分,Hb88g/L,Hct26%。经输平衡液500ml、代血浆500ml后,送手术室。准备行骨折切开复位、内固定术。

麻醉诱导过程中,哪些处理欠稳妥()。

A.立即吸氧

B.立即输血、输液

C.慢诱导气管插管

D.立即保持呼吸道通畅

E.应待血压正常了再诱导

F.血压低时,可用强心剂

题型:选择题

确定保险代理关系的基础是( )。

A.保险合同
B.保险人的授权
C.保险代理合同
D.代理销售的保险产品

题型:选择题

角球被踢出并触及裁判员后进入对方球门,裁判员应该如何处理?()

A.令角球重踢

B.进球无效,在球击中裁判员的地点以坠球恢复比赛

C.判进一球

D.进球无效,防守方以球门球恢复比赛

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