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【单选题】
桥式整流电容滤波电路中,若变压器二次电压有效值为10V,现测得输出电压为9V,则说明( )。
A.
滤波电容开路
B.
负载开路
C.
滤波电容击穿短路
D.
其中一个二极管损 坏
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【判断题】The minimum amount insurance should be the CIF or the CIP value of the goods plus, 20%.( )
A.
正确
B.
错误
【单选题】Opponents of the minimum wage point out that the minimum wage
A.
encourages teenagers to drop out of school.
B.
prevents some workers from getting needed on-the-job training.
C.
contributes to the problem of unemployment.
D.
All of the above are correct.
【单选题】Choose the better version of the sentences that best improve the original sentences. Through analysis of the equation, we found that the minimum and maximum quantity of the critical inductance could b...
A.
Through analysis of the equation, we found that the minimum and maximum quantity of the critical inductance could appear not at the point of the minimum or maximum duty ratio, which is discussed in Part II.
B.
Through analysis of the equation, we found that the minimum and maximum quantity of the critical inductance could appear not at the point of the minimum or maximum duty ratio . It is discussed comprehensively in Part II.
C.
Through analysis of the equation, it was found that the minimum and maximum quantity of the critical inductance could appear not at the point of the minimum or maximum duty ratio . It is discussed comprehensively in Part II.
D.
Through analysis of the equation, the minimum and maximum quantity of the critical inductance were found to appear not at the point of the minimum or maximum duty ratio . It is discussed comprehensively in Part II.
【单选题】不以冠状轴(Y轴)为中心在矢状面上作关节屈伸运动的关节为 ( )
A.
肩关节
B.
肘关节
C.
腕关节
D.
指关节
E.
髋关节
【单选题】腕关节屈、伸运动的轴心是
A.
舟状骨
B.
月状骨
C.
三角骨
D.
头状骨
【简答题】All the researchers investing the minimum wage agree that raising the minimum wagewill reduce poverty. 查看材料
【单选题】晓晓最近在一项重大比赛中取得了很好的成绩,这段时间内心情非常愉悦,走在路上看到寻常的花花草草都觉得很美好。这种情绪状态是( )。
A.
美感
B.
道德感
C.
心境
D.
激情
【单选题】The doctor suggested that he __________. will not smoke B not smoke C didn’t smoke D wouldn’t smoke
A.
will not smoke
B.
not smoke
C.
didn’t smoke
D.
wouldn’t smoke
【单选题】The safe working load for the assembled cargo gear and the minimum angle to the horizontal for which the gear is designed shall be marked on the ______.
A.
deck
B.
head of the boom
C.
heel of the boom
D.
mast or king post
【多选题】高运球动作方法中,手臂动作要( )。
A.
运球时,五指张开
B.
用手指和指根以上部位及手掌的外缘触球,掌心不触球
C.
运球时以肘关节为轴,前臂自然伸屈
D.
用手腕、手指柔和而有力地按拍球
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