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【单选题】
一质点作简谐振动,当它由平衡位置向x轴正方向运动时,对应的振动相位是:
A.
π
B.
0
C.
-π/2
D.
π/2
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参考答案:
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【判断题】.当最大实体要求应用于被测要素时,则被测要素的尺寸公差可补偿给形位误差,形位误差的最大允许值应小于给定的公差值。
A.
正确
B.
错误
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【判断题】汽车一般由发动机、底盘、电气设备车身四部分组成。 ( )
A.
正确
B.
错误
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【判断题】当最大实体要求应用于被测要素时,则被测要素的尺寸公差可补偿给形状误差,形位误差的最 大允许值应小于给定的公差值。 ( )
A.
正确
B.
错误
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【单选题】汽车一般由四个部分组成,它们是()
A.
发动机、底盘、车身、电气设备
B.
发动机、底盘、驾驶室、电气设备
C.
发动机、底盘、车体、电气设备
D.
发动机、底盘、驾驶室、工作装置
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【单选题】The flag of the U. S. has _______________. [ ]
A.
stars and leaves
B.
stars and stripes
C.
star and stripe
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【简答题】Cancer has emerged as a major killer in several newly industrialized countries and is striking more people in areas of developing world where it was hardly known before, the World Health Organization(...
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【单选题】An element Y has the proton number 18.The next element in the Periodic Table is an element Z.WhiCh statement is correct?
A.
Element Z has one more electron in its outer shell than element Y.
B.
Element Z has one more electron shell than element Y.
C.
Element Z is in the same group of the Periodic Table as element Y.
D.
Element Z is in the same period of the Periodic Table as element Y.
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【单选题】The adjusting entry to recognize periodic depreciation has what effect on the basic accounting equation?
A.
Decrease in assets, decrease in liabilities
B.
Decrease in assets, increase in liabilities
C.
Decrease in assets, increase in stockholders' equity
D.
Decrease in assets, decrease in stockholders' equity
E.
None of these
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【判断题】汽车一般由发动机、底盘、电气设备及车身四部分组成
A.
正确
B.
错误
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【判断题】当最大实体要求应用于被测要素时,则被测要素的尺寸公差可补偿给形状误差,形位误差的最大允许值应小于给定的公差值。
A.
正确
B.
错误
查看完整题目与答案
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【判断题】.当最大实体要求应用于被测要素时,则被测要素的尺寸公差可补偿给形位误差,形位误差的最大允许值应小于给定的公差值。
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【单选题】汽车一般由四个部分组成,它们是()
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【单选题】The flag of the U. S. has _______________. [ ]
A.
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stars and stripes
C.
star and stripe
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【简答题】Cancer has emerged as a major killer in several newly industrialized countries and is striking more people in areas of developing world where it was hardly known before, the World Health Organization(...
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【单选题】An element Y has the proton number 18.The next element in the Periodic Table is an element Z.WhiCh statement is correct?
A.
Element Z has one more electron in its outer shell than element Y.
B.
Element Z has one more electron shell than element Y.
C.
Element Z is in the same group of the Periodic Table as element Y.
D.
Element Z is in the same period of the Periodic Table as element Y.
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【单选题】The adjusting entry to recognize periodic depreciation has what effect on the basic accounting equation?
A.
Decrease in assets, decrease in liabilities
B.
Decrease in assets, increase in liabilities
C.
Decrease in assets, increase in stockholders' equity
D.
Decrease in assets, decrease in stockholders' equity
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【判断题】汽车一般由发动机、底盘、电气设备及车身四部分组成
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正确
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【判断题】当最大实体要求应用于被测要素时,则被测要素的尺寸公差可补偿给形状误差,形位误差的最大允许值应小于给定的公差值。
A.
正确
B.
错误
查看完整题目与答案
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