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【单选题】
船舶主机换向,从前进三到后退三约需时间为____。A.
蒸汽机船60~90秒,汽轮机船90~120秒,内燃机船120~180秒
B.
内燃机船60~90秒,蒸汽机船90~120秒,汽轮机船120~180秒
C.
汽轮机船60~90秒,蒸汽机船120~180秒,内燃机船90~120秒
D.
蒸汽机船60~90秒,内燃机船90~120秒, 汽轮机船120~180秒
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【简答题】完型填空 (每小题1分，共20分) My parents made me know the ideas of family, faith and patriotism (爱国主义) when I was young. 26 we lived a hard life, they 27 great importance to us realize how 28 we were ...
【简答题】（本小题满分12分） 已知 在定义域上为减函数，且其导函数 存在零点。 （I）求实数a的值； （II）函数 的图象与函数 的图象关于直线y=x对称，且 为函数 的导函数， 是函数 图像上两点，若 ，判断 的大小，并证明你的结论。[
【多选题】The ideas of parents usually ( ) in their children. 2.We’ve discussed all the marketing ( ) and decided to fax for television advertising. 3. Our company’s ( ) is to listen to o...
A.
franchise F. exceptional
B.
entail G.options
C.
released H.displayed
D.
philosophy I. demanding
E.
take root J. recovery
【简答题】语言实验室 选词填空 task 2 Complete the following sentences with the words from Task 1. Change the form if necessary. 1. Cable television companies have launched major campaigns to increase their number of ___...
【简答题】Task 2 Complete the following sentences with the words from Task 1. Change the form if necessary. 1. Cable television companies have launched major campaigns to increase their number of ____________...
【单选题】The title that can best express the ideas of the passage is ______.
A.
A Study on Baby Talk
B.
How Babies Learn Language
C.
The Function of Communication between Children and Parents
D.
How to Teach Your Baby to Learn Languages
【简答题】Culture itself must be transmitted, and the most effective way is through the family. Parents teach their children the ideas and traditions they obtained from their own parents. For this reason the fa...
【单选题】Times have changed and the ideas of the young and the old about the same thing are often ill contra diction. For example, parents and teenagers often disagree about the amount of freedom and responsib...
A.
is
B.
should
C.
will
D.
are
【单选题】小李毎天坚持用 “微信运动”来统计当天行走的步数, 图 2-2 为她在 4 月 12 日的步行情况。按照正常成年人的身体指标和通常的步伐及频率进行估测,以下合理的是 ( )
A.
小李的质量大约为 500 kg
B.
小李步行的平均速度大约为 10 m/s
C.
当天小李走过的路程大约为 3 000 m
D.
步行后小李心跳一次的时间大约为 4 s
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