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【简答题】
具有一定去向的列车的集合简称()。
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【单选题】已知两个正弦量为 A, A,则 。
A.
i 1 超前i 2 90°
B.
i 1 滞后i 2 90°
C.
i 1 滞后i 2 30°
D.
i 1 超前i 2 60°
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【单选题】已知两个正弦量为 V, V,则( )。
A.
比 超前30°
B.
比 滞后30°
C.
比 超前90°
D.
不能判断相位差
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【单选题】( )42.How many hours do you spend _______TV?
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watch
B.
to watch
C.
watching
D.
watched
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【判断题】服务祖国人民与实现自身价值是难以统一起来的
A.
正确
B.
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【简答题】三、完形填空（总计20小题，每小题1.5分） It was a sunny day．A city man was driving along a country road with a new wagon（马车）and a beautiful pair of horses．He didn’t pay a lot of 36 to where he was going．Pretty soon he ...
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【简答题】I had my first job at the age of thir, when a friend of my mother’s who owned a book shop 　36　meI had my first job at the age of thir, when a friend of my mother’s who owned a book shop 36 ___...
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【简答题】In a period 12,500 units were made and there was a favourable labour efficiency variance of $14,700. If 42,000 labour hours were worked and the standard wage rate was $7 per hour, how many standard ho...
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【单选题】哈雷彗星的周期约是多少年?
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B.
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C.
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D.
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【简答题】听下面一段材料，回答第1-4题。 1. What does the speaker think of his working conditions? A. Poor. B. S0-so. C.  Good. 2. How many hours does the speaker work every week? A. 38. B. 40. C. 42. 3. How does the speaker...
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【单选题】已知两个正弦量为 A, A,则 。
A.
i 1 超前i 2 90°
B.
i 1 滞后i 2 90°
C.
i 1 滞后i 2 30°
D.
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【判断题】服务祖国人民与实现自身价值是难以统一起来的。 ()
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【单选题】已知两个正弦量为 V, V,则( )。
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A.
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B.
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【简答题】三、完形填空（总计20小题，每小题1.5分） It was a sunny day．A city man was driving along a country road with a new wagon（马车）and a beautiful pair of horses．He didn’t pay a lot of 36 to where he was going．Pretty soon he ...
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【简答题】I had my first job at the age of thir, when a friend of my mother’s who owned a book shop 　36　meI had my first job at the age of thir, when a friend of my mother’s who owned a book shop 36 ___...
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【简答题】In a period 12,500 units were made and there was a favourable labour efficiency variance of $14,700. If 42,000 labour hours were worked and the standard wage rate was $7 per hour, how many standard ho...
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C.
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D.
78
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