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【判断题】
一台隐极同步发电机的直轴同步电抗与交轴同步电抗数值相等 , 直轴超瞬变电抗与交轴超瞬变电抗也相等。
A.
正确
B.
错误
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【简答题】甲公司是一个铸造企业,燃料成本、电力成本以及维修成本不便归入固定成本或变动成本。对于这些混合成本,分别使用工业工程法、契约检查法和高低点法进行分析确定一般模型,然后按比例分配。其中: ( 1)燃料成本。燃料用于铸造工段的熔炉,具体分为点火(耗用木柴和焦炭)和熔化铁水(耗用焦炭)两项操作。假设企业按照最佳的操作方法进行生产,每次点火要使用木柴0.1吨、焦炭1.5吨,熔化1吨铁水要使用焦炭0.15吨,...
【判断题】The most familiar and obvious form of air pollution is smog. T/F
A.
正确
B.
错误
【判断题】电工作业分为高压电工和低压电工这个是对的还是错的
A.
正确
B.
错误
【判断题】桌面IC卡读写器读写距离是20cm,交易速度在200~10000ms之间。
A.
正确
B.
错误
【单选题】The___pollution is becoming more and more serious. We haven ’ t seen blue skies for several days.
A.
noise
B.
water
C.
air
【单选题】设集合A有3个元素,则A中的划分有
A.
3 个
B.
5 个
C.
6 个
D.
9 个
【判断题】Air pollution is the harmful substance that introduced by people into the atmosphere. T/F
A.
正确
B.
错误
【单选题】侧向制动时,身体带动双脚迅速向一侧转体( )度,两脚平行分开,
A.
30
B.
60
C.
90
D.
180
【单选题】Acid rain is a very serious air and water pollution problem. Many people feel-that it is the most serious pollution problem that we now face. Scientists say that plant and animal life in thousands of ...
A.
It is acknowledged by scientists to be the most serious pollution problem that human beings now face.
B.
Many endangered species are on the verge of extinction because of acid rain.
C.
Acid rain is composed of sulfur dioxide and nitrogen oxides mixed with water vapor found in the upper atmosphere.
D.
Acid rain is mostly found in the United States and Canada.
【单选题】工程监理实施的步骤有:①编制监理规划:②参与验收,签署监理意见;③编制监 理实施细则;④任命总监成立项目监理机构;⑤开展监理工作;⑥向建设单位提交监理 档案资料;⑦监理工作总结。其正确顺序为(44)。
A.
②③①⑥⑦④⑤
B.
①②③④⑤⑥⑦
C.
④①③⑤②⑥⑦
D.
④①⑤③②⑦⑥
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