广州亚运会上中国女子蹦床队摘金夺银.比赛中,当运动员从蹦床上起跳后,在空中上升再

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广州亚运会上中国女子蹦床队摘金夺银.比赛中,当运动员从蹦床上起跳后,在空中上升再下落到达蹦床前的过程中(不计空气阻力),关于其能量的描述,正确的是(  )

A.动能先减小后增大,机械能不变

B.动能先增大后减小,机械能不变

C.动能先增大后减小,机械能减小

D.动能先减小后增大,机械能减小

考点:机械能与其他形式能量的转化
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在计算存货的可变现净值时,下列各项中,应予以考虑的是( )。

A.预计资产负债表日后销售价格的下降

B.预计资产负债表日后将发行公司债券

C.预计资产负债表日后将增加公司管理人员的薪酬

D.预计资产负债表日后公司员工持有的认股权证将转为股权

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开办个人金融业务的营业网点负责办理个人电子银行的注册、变更和注销等业务,并按照我行反洗钱管理办法的有关规定,做好客户身份识别、大额和可疑交易报告等工作。()

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电子产品环境应力筛选最有效的环境应力是()。

A.正弦振动

B.随机振动

C.温度循环

D.高温老化

E.冲击振动

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集散型控制系统可分为哪几级?每一级的功能和主要设备有哪些?

题型:选择题

Almost everyone likes dogs, and almost everyone likes to read stories about dogs.
I have a friend. He has a big police dog named Jack. Police dogs are very clever. Every Sunday afternoon my friend takes the dog for a long walk in the park. Jack likes these long walks very much.
One Sunday afternoon, a young man came to visit my friend. He stayed a long time. He talked and talked. Soon it was time for my friend to take Jack out for a walk. But the visitor still stayed. Jack became very worried. He walked around the room several times and then sat down in front of the visitor and looked at him. But the visitor paid no attention. He went on talking. At last Jack got angry. He went out of the room and came back a few minutes later. He sat down again in front of the visitor, but this time he took the visitor’s cap in his mouth.

______people like to read dog stories.

A. Many

B. Very few

C. None

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