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【简答题】
简述设计调查问卷的注意事项。
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【单选题】24关于电力拖动起货机的电动机与控制设备，说法正确的是    。
A.
起货机的电动机机械特性较硬，保证无论负载重与轻，运行速度差不多
B.
起货机的电动机过载性能好，起动力矩较大
C.
起货机的电动机调速范围一般较窄
D.
一般选用自复位按钮作为主令操纵电器
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【单选题】某企业税后净利润为75万元,所得税率25%,利息费用为50万元,则该企业利息保障倍数为()。
A.
1
B.
2
C.
3
D.
5
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【单选题】某企业税后利润为 75 万元,所得税税率为 25% (无纳税调整事项),利息费用为 50 万元,则利息费用保障倍数为 ( )
A.
2. 78
B.
3
C.
4
D.
2. 5
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【简答题】阅读下面的材料，然后根据材料回答问题。 Elizabeth lived with her six children in a small house. One winter, there was a big flood (洪水), and quite a few houses were washed away, but Elizabeth's house was high enough to es...
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【简答题】某企业本年度税后利润为75万元，所得税税率25%，利息费用50万元，则该企业的利息保障倍数为( )。 A.1 B．1.5 C．2 D．3
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【单选题】Based on the information presented in this selection, a child can best be helped to overcome a fear of riding an escalator by ______.
A.
talking with an adult about why riding an escalator is frightening
B.
watching an adult ride an escalator, being encouraged to try it, and being praised if he or she does
C.
being allowed to avoid escalators until the fear has diminished naturally
D.
watching an adult ride an escalator and receiving verbal assurances from the adult that it is safe
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【单选题】某企业税后净利润为75万元，所得税率为25%，利息支出为50万元，则该企业的利息费用保障倍数为()。
A.
1
B.
2
C.
3
D.
4
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【单选题】在公钥密码体制中,不公开的是( )
A.
公钥
B.
私钥
C.
加密算法
D.
公钥和加密算法
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【单选题】在公钥密码体制中不可以公开的是
A.
公钥
B.
公钥和加密算法
C.
私钥
D.
私钥的加密算法
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【简答题】阅读下面的材料，然后根据材料内容回答所提问题。 You may have known several kinds of police, traffic police and street police. But have you ever heard of energysaving (节能) policemen? A group of 22 of these new policemen went ...
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相关题目：
【单选题】24关于电力拖动起货机的电动机与控制设备，说法正确的是    。
A.
起货机的电动机机械特性较硬，保证无论负载重与轻，运行速度差不多
B.
起货机的电动机过载性能好，起动力矩较大
C.
起货机的电动机调速范围一般较窄
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一般选用自复位按钮作为主令操纵电器
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【单选题】某企业税后净利润为75万元,所得税率25%,利息费用为50万元,则该企业利息保障倍数为()。
A.
1
B.
2
C.
3
D.
5
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【单选题】某企业税后利润为 75 万元,所得税税率为 25% (无纳税调整事项),利息费用为 50 万元,则利息费用保障倍数为 ( )
A.
2. 78
B.
3
C.
4
D.
2. 5
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【简答题】阅读下面的材料，然后根据材料回答问题。 Elizabeth lived with her six children in a small house. One winter, there was a big flood (洪水), and quite a few houses were washed away, but Elizabeth's house was high enough to es...
查看完整题目与答案
【简答题】某企业本年度税后利润为75万元，所得税税率25%，利息费用50万元，则该企业的利息保障倍数为( )。 A.1 B．1.5 C．2 D．3
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【单选题】Based on the information presented in this selection, a child can best be helped to overcome a fear of riding an escalator by ______.
A.
talking with an adult about why riding an escalator is frightening
B.
watching an adult ride an escalator, being encouraged to try it, and being praised if he or she does
C.
being allowed to avoid escalators until the fear has diminished naturally
D.
watching an adult ride an escalator and receiving verbal assurances from the adult that it is safe
查看完整题目与答案
【单选题】某企业税后净利润为75万元，所得税率为25%，利息支出为50万元，则该企业的利息费用保障倍数为()。
A.
1
B.
2
C.
3
D.
4
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【单选题】在公钥密码体制中,不公开的是( )
A.
公钥
B.
私钥
C.
加密算法
D.
公钥和加密算法
查看完整题目与答案
【单选题】在公钥密码体制中不可以公开的是
A.
公钥
B.
公钥和加密算法
C.
私钥
D.
私钥的加密算法
查看完整题目与答案
【简答题】阅读下面的材料，然后根据材料内容回答所提问题。 You may have known several kinds of police, traffic police and street police. But have you ever heard of energysaving (节能) policemen? A group of 22 of these new policemen went ...
查看完整题目与答案