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【简答题】
Match the right choices
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参考答案:
举一反三
【单选题】When Edison died, it was proposed that the American people all power in their homes, streets, and factories for several minutes in honour of this great man.
A.
turn off
B.
turned off
C.
would turn off
D.
had turned off
【单选题】粗略地说,电力电子系统是由 ( )组成
A.
主电路和控制电路
B.
主电路和驱动电路
C.
主电路和检测电路
【单选题】如果字段“成绩”的取值范围为0-100,则错误的验证规则是()
A.
>=0 and <=100
B.
[成绩]>=0 and [成绩]<=100
C.
成绩>=0 and 成绩<=100
D.
0<=[成绩]<=100
【判断题】如果字段“成绩”的取值范围为0~100,则0<=[成绩]<=100写法是正确的。
A.
正确
B.
错误
【简答题】Honors: A. The United States gave him its highest award, a special Congressional Medal of Honor. B. When Edison died, it was proposed that the American people _______ for several minutes in honor of t...
【单选题】如果字段“成绩”的取值范围为0-100,则正确的验证规则是()
A.
0-100
B.
[成绩]>=0 且 [成绩]<=100
C.
>=0 and <=100
D.
0<=[成绩]<=100
【单选题】图中为电力电子系统的组成结构示意图,其中 “ A 电路”是
A.
检测电路
B.
控制电路
C.
主电路
D.
驱动电路
【单选题】When Edison died, it was proposed that the American people ( ) all power in their homes, streets, and factories for several minutes in honor of this great man.
A.
turn off
B.
turned off
C.
would turn off
D.
had turned off
【判断题】通常一台数控机床的联动轴数一般会大于或等于可控轴数。( )
A.
正确
B.
错误
【多选题】电力拖动系统一般由四个子系统组成,它们分别是( )
A.
电源
B.
控制设备
C.
电动机
D.
传动机构
E.
工作机构
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