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【简答题】
如图所示的控制线路是在如图所示的接触器自锁正转控制线路中,增加了什么才能 构成了具有过载保护的接触器自锁正转控制线路。该线路不但具有短路保护、欠压和失压保护作用,而且具有过载保护作用。
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【简答题】安培定则(也叫右手螺旋定则)(二)?
【简答题】（27）设有如下程序 Private Sub Command 1_Click() x=10：Y=0 For i=1 To S Do x＝x-2 y＝y+2 Loop Until y＞5 Or x＜-1 Next End Sub 运行程序，其中Do循环执行的次数是 A）15 B）10 C）7 D）3
【简答题】安培定则(也叫右手螺旋定则)(一)?
【简答题】海运提单练习().doc 海运提单练习.doc
【单选题】设有如下程序 Private Sub Command1 Click（ ） x=10：Y=0 For i=l To 5 Do x=x-2 y=y+2 Loop Until y>j Or x
A.
15
B.
10
C.
7
D.
3
【单选题】没有如下程序 Private Sub Commandl—Click() x=10：u=0 For i=1 TO 5 Do x=x-2 y=y+2 Loop Until y>5 Or x Next End Sub 运行程序，其中Do循环执行的次数是
A.
15
B.
10
C.
7
D.
3
【单选题】'This distinction' in the last paragraph refers to the fact that Hitler ______.
A.
killed far more people than Genghis Khan did
B.
was not so savage as Genghis Khan was
C.
came from modern civilization while Genghis Khan was not
D.
was more civilized than Genghis Khan was
【单选题】设有如下程序 Private Sub Command1 Click（ ） x=10：Y=0 For i=l To 5 Do x=x-2 y=y+2 Loop Until y>5 Or xNex1 End Sub 运行程序，其中Do循环执行的次数是（ ）。
A.
15
B.
10
C.
7
D.
3
【单选题】According to paragraph. 1, which of the following is true?
A.
Bookstores are going out of fashion because of e-books and e-tailers.
B.
Digital books are likely to sell better than paper ones before 2015 in USA.
C.
Bookstores are facing an existential crisis because of insufficient time.
D.
The future of Foyles has become the primary concern of everyone.
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