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【单选题】
某小组40名职工,每人工作天数相同。其中20人每天工作10小时,15人每人工作8小时,5人每天工作6小时。则计算该组职工平均每天工作时数应采用( )
A.
简单调和平均数
B.
加权调和平均数
C.
简单算术平均数
D.
加权算术平均数
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举一反三
【单选题】— Why, Jack, you look so tired! — Well, I _____ the house and I must finish the work tomorrow. [ ]
A.
painted
B.
had painted
C.
have been painting
D.
have painted
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【判断题】CIF条件下由卖方负责办理货运保险,CFR条件下由卖方投保,因此,运输途中货物灭失的风险,前者为卖方负责,后者为买方负责。
A.
正确
B.
错误
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【判断题】8汽车漆面效果颜料随观察的角度不同,效果会不一样
A.
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B.
错误
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【单选题】被朱自清誉为"五四"时期"惟一的爱国诗人"是
A.
郭沫若
B.
闻一多
C.
冰心
D.
郁达夫
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【单选题】——Why jack you look so tired! —— Well, I( )the house and I must finish the work tomorrow.
A.
was painting
B.
will be painting
C.
have painted
D.
have been painting
查看完整题目与答案
【判断题】( ) 钢材根据加热保温和冷却方式的不同可将常见的热处理方式分为退火、正火、淬火、回火及表面热处理五种。
A.
正确
B.
错误
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【判断题】CIF条件下由卖方负责办理货运保险,CFR条件下由买方投保。因此运输途中货物灭失的风险,前者为卖方负责,后者为买方负责。
A.
正确
B.
错误
查看完整题目与答案
【单选题】—why, Jack, you look so tired! ---Well, I _____the house and I must finish the work tomorrow.
A.
was painting
B.
will be painting
C.
have painted
D.
have been painting
查看完整题目与答案
【判断题】钢材根据加热保温和冷却方式的不同可将常见的热处理方式分为退火、正火、淬火、回火及表面热处理五种。
A.
正确
B.
错误
查看完整题目与答案
【单选题】–Why, Jack, you look so tired! --Well, I ___the house and I must finish the work tomorrow.
A.
was painting
B.
will be painting
C.
have painted
D.
have been painting
查看完整题目与答案
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【单选题】— Why, Jack, you look so tired! — Well, I _____ the house and I must finish the work tomorrow. [ ]
A.
painted
B.
had painted
C.
have been painting
D.
have painted
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【判断题】CIF条件下由卖方负责办理货运保险,CFR条件下由卖方投保,因此,运输途中货物灭失的风险,前者为卖方负责,后者为买方负责。
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【判断题】8汽车漆面效果颜料随观察的角度不同,效果会不一样
A.
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B.
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查看完整题目与答案
【单选题】被朱自清誉为"五四"时期"惟一的爱国诗人"是
A.
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【单选题】——Why jack you look so tired! —— Well, I( )the house and I must finish the work tomorrow.
A.
was painting
B.
will be painting
C.
have painted
D.
have been painting
查看完整题目与答案
【判断题】( ) 钢材根据加热保温和冷却方式的不同可将常见的热处理方式分为退火、正火、淬火、回火及表面热处理五种。
A.
正确
B.
错误
查看完整题目与答案
【判断题】CIF条件下由卖方负责办理货运保险,CFR条件下由买方投保。因此运输途中货物灭失的风险,前者为卖方负责,后者为买方负责。
A.
正确
B.
错误
查看完整题目与答案
【单选题】—why, Jack, you look so tired! ---Well, I _____the house and I must finish the work tomorrow.
A.
was painting
B.
will be painting
C.
have painted
D.
have been painting
查看完整题目与答案
【判断题】钢材根据加热保温和冷却方式的不同可将常见的热处理方式分为退火、正火、淬火、回火及表面热处理五种。
A.
正确
B.
错误
查看完整题目与答案
【单选题】–Why, Jack, you look so tired! --Well, I ___the house and I must finish the work tomorrow.
A.
was painting
B.
will be painting
C.
have painted
D.
have been painting
查看完整题目与答案