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【单选题】
In order for the automatic lifeboat drain to operate properly().
A.
the cap should be removed to drain the boat when it is waterborne
B.
the cage must be free of rubbish or the ball may not seat properly
C.
there is an automatic ball check located in a siphon tube
D.
the small lever to release the rubber ball float must be turned counterclockwise
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参考答案:
举一反三
【单选题】Regardless of what caused it, I am grateful that have finally reached a point in my life_______I can appreciate my strengths, accept my weaknesses and try to be comfortable with everything in between.
A.
Why
B.
Where
C.
Which
D.
What
【简答题】英译汉: It has to be the Internet. Everything in the world is so connected because of it. It makes life easier in so many ways—I can’t imagine life without it.
【单选题】关于解集的性质的下列说法正确的是:
A.
可行解>基本解>基本可行解
B.
可行解
C.
可行解 ∩ 基本解=基本可行解
D.
可行解 ∩ 基本解= 最优解
【单选题】关于解集的性质的下列说法正确的是:
A.
可行解≥基本解≥基本可行解
B.
基本解≥可行解≥基本可行解
C.
可行解I基本解=基本可行解
D.
可行解I基本解=最优解
【简答题】2) Later that night, as I lay in bed surrounded by mosquito nets, beneath the spinning blades ofa large ceiling fan, I knew that everything in Tanzania was going to be different. The greatestadventure...
【判断题】“My real life friends and my Internet friends are the backbone in everything I do” is a good topic sentence.
A.
正确
B.
错误
【单选题】氧气是生命活动的必需气体。下列关于氧气的性质、制备说法正确的是
A.
保持氧气化学性质的最小粒子是氧分子
B.
可用向下排空气法或排水法收集氧气
C.
铁丝在氧气中剧烈燃烧,生成 Fe 2 O 3
D.
利用如图装置可比较 MnO 2 和 CuO 对 H 2 O 2 分解的影响
【单选题】I don’t think 1 will win a lottery(彩票)of 5 000 000 dollars in a11 my life. 一Well .Everything can happen.
A.
you can never tell
B.
you’re kidding
C.
what you say
D.
you made it
【简答题】Read the text again and answer the following multiple choice questions. It was a beautiful morning that summer day. I neatly packed everything that I needed into my little green car. Then, I started m...
【单选题】教师在授课过程中多次使用重音,说明教师语言具有 特殊性。
A.
交际对象
B.
交际目的
C.
交际环境
D.
交际场所
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