在V形和U形河谷修建拱坝有何差异?

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问题:

在V形和U形河谷修建拱坝有何差异?

考点:水利工程水工建筑物水工建筑物题库
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Some children are afraid to go to the dentist (牙医), but not me. I'm a boy of 8 and I have a funny dentist. His name is Dr. Smileyface. I don't think that's his real (真实的) name. But when the children go to see him, he tells his name to all of them.

He has a cool waiting room.  It has computer games and a big toy box. Dr. Smileyface always wears funny hats. Sometimes he paints his face. He asks funny questions like "Are you married(结婚)?" and "Do you eat flowers to make your breath (呼吸)  smell so sweet?" That makes me laugh. One time, he tells me this joke (玩笑), "What has lots of teeth but never goes to the dentist? A comb (木梳) ! " When I laugh, he pulls my tooth out. It doesn't hurt at all (一点不疼)! He also tells me how to take care of my teeth in an interesting way. Before I leave (离开), he always gives me a surprise (惊喜). This time he gives me a toy ship and I like it very much.

小题1:How does the writer(作者) feel when he goes to the dentist?

A.Angry.

B.Afraid.

C.Sad.

D.Happy.小题2:What does Dr. Smileyface tell the writer to do?

A.How to laugh.

B.How to take care of his teeth.

C.To eat flowers.

D.To paint his face.小题3:What does Dr. Smileyface give the writer this time?

A.A toy ship.

B.A toy box.

C.A comb.

D.Flowers.

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网络层的通讯功能包括()和最优路径选择。

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甲公司2010年初的所有者权益总额为1250万元,2010年亏损70万元,2011年亏损30万元,2012年到2013年的税前利润每年均为0,2014年公司实现税前利润300万元。公司章程规定,法定盈余公积和任意盈余公积的提取比例均为10%。公司董事会提出2014年度分配利润70万元,但尚未提交股东大会审议。假设公司2010~2014年不存在纳税调整和其他导致所有者权益变动的事项,适用企业所得税税率为25%。则甲公司2014年末所有者权益总额为()万元。

A.1330

B.1360

C.1375

D.1400

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美国家庭值得我们学习借鉴的理财教育经验不包括()。

A.教育孩子自力更生,不能坐享其成

B.教导孩子克制欲望,合理消费

C.强制孩子通过劳动满足消费欲望

D.体会“给予”的快

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简述我国生活饮用水水质标准中氟化物的限量值及制定依据。

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