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【单选题】
反复短时工作制的周期时间T≤10min,工作时间tg≤4min时,导线的允许电流有下述情况确定:截面等于( )的铜线,其允许电流按长期工作制计算。
A.
1.5mm2
B.
2.5mm2
C.
4mm2
D.
6mm2
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举一反三
【单选题】What should you say when ___ to a stranger? [     ]
A.
to introduce
B.
introducing
C.
introduced
D.
being introduced
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【单选题】When word got out that Doug Beardsley was introducing a new course this spring—' Hockey (冰球) Literature and the Canadian Psyche(精神) '—the 40 seats in the class were quickly taken. ESPN offered to fly ...
A.
To teach how to play hockey.
B.
To introduce an English teacher.
C.
To introduce a book by Beardsley.
D.
To talk about hockey and the Canadians.
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【单选题】when introducing Mr．Myhrvold，the author mentions or implies all the following EXCEPT__________．
A.
he is a physicist
B.
he is interested in dinosaurs
C.
he is interested in cooking
D.
he doesn’t like natural gas
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A.
正确
B.
错误
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【单选题】下面不属于B2C旅游电子商务门户网站的盈利模式的是( )。
A.
旅游广告
B.
服务销售
C.
旅游产品销售
D.
旅游交易费
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【简答题】They still continued ______ to each other. Awrite Bwrote Cwritten Dwriting
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【单选题】When first ___________to the market, these products enjoyed great success. [     ]
A.
introducing
B.
introduced
C.
introduce
D.
being introduced
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【简答题】灰化完全标准是什么,样品表现什么颜色?
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【单选题】In English culture, the introduction rule “____” is correct.
A.
When introducing two males or two females, put the younger person's name first
B.
Men don't have to take off their gloves before shaking hands
C.
When a man and a woman are to shake hands, it is the man who extends his hand first
D.
When introductions are made , start with first names, and add some descriptive notes
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相关题目：
【单选题】What should you say when ___ to a stranger? [     ]
A.
to introduce
B.
introducing
C.
introduced
D.
being introduced
查看完整题目与答案
【单选题】When word got out that Doug Beardsley was introducing a new course this spring—' Hockey (冰球) Literature and the Canadian Psyche(精神) '—the 40 seats in the class were quickly taken. ESPN offered to fly ...
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【单选题】when introducing Mr．Myhrvold，the author mentions or implies all the following EXCEPT__________．
A.
he is a physicist
B.
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he doesn’t like natural gas
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【简答题】如何认识产生压力的原因?
查看完整题目与答案
【判断题】肾小管各部分都是由单层上皮组成， 均具有不同程度的重吸收作用。
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【简答题】They still continued ______ to each other. Awrite Bwrote Cwritten Dwriting
查看完整题目与答案
【单选题】When first ___________to the market, these products enjoyed great success. [     ]
A.
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B.
introduced
C.
introduce
D.
being introduced
查看完整题目与答案
【简答题】灰化完全标准是什么,样品表现什么颜色?
查看完整题目与答案
【单选题】In English culture, the introduction rule “____” is correct.
A.
When introducing two males or two females, put the younger person's name first
B.
Men don't have to take off their gloves before shaking hands
C.
When a man and a woman are to shake hands, it is the man who extends his hand first
D.
When introductions are made , start with first names, and add some descriptive notes
查看完整题目与答案