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【判断题】
在圆柱坐标系中,出了Z方向的单位矢量是常矢量,其它两个方向的单位矢量随着坐标变量( )的取值不同,方向是变化的A.
正确
B.
错误
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【简答题】第二节 语法运用(25%) 从下列各题的A、B、C三个选项中选出一个最佳选项填入空白处(每题1分,共25分)。 ( ) 1._______ smoke near the petrol station. A. Doesn't B. Don’t C. Not ( ) 2. _______ straight ahead, then turn right at that corner...
【简答题】_______ smoke near the petrol station. A. Doesn’t B. Don’t C. Not 2. _______ straight ahead, then turn right at that corner. A. Go B. Going C. Goes 3. He has moved _______ his new home. A. at B. to C....
【单选题】What does the waiter say about Dim Sum?
A.
Dim Sum is for more than twenty people.
B.
Dim Sum costs twenty dollars.
C.
There are more than twenty kinds of Dim Sum.
【单选题】What does the waiter say about Dim Sum?
A.
Dim sum is for more than twenty people.
B.
Dim sum costs twenty dollars.
C.
There are more than twenty dishes of Dim sum.
【简答题】蒂蒙斯在他的创业模型中描述了创业三要素分别为(__),(__)和 (__)。
【简答题】What journals published two papers comparing the two viruses ?
【简答题】She sits _______ Susan _____ Peter.
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