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【判断题】
功量W是状态量,微小功量可用dW表示。
A.
正确
B.
错误
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举一反三
【单选题】以下参考文献 [J][M][C][D] 分别表示( ) ( 1 )教材或原著 ( 2 )期刊 ( 3 )学位论文 ( 4 )学术会议论文
A.
( 1 )( 2 )( 3 )( 4 )
B.
( 2 )( 1 )( 3 )( 4 )
C.
( 3 )( 2 )( 1 )( 4 )
D.
( 2 )( 1 )( 4 )( 3 )
【判断题】通过可决系数的高低可以进行显著性判断。
A.
正确
B.
错误
【单选题】Which of the following statements is true about 15-year and 30-year fixed-payment mortgages?
A.
Thirty-year mortgages are more popular than 15-year mortgages among homeowners who are refinancing.
B.
Borrowers pay more total interest over the life of a 15-year mortgage than on a 30-year loan, all else being equal.
C.
The remaining balance on a 30-year loan declines more quickly than an otherwise equivalent 15-year mortgage.
D.
Assuming they can afford the payments on both mortgages, borrowers usually should choose a 30-year mortgage over an otherwise identical 15-year loan if their discount rate (opportunity cost) exceeds the mortgage rate.
【单选题】( )是行车有关人员手持信号旗者直接用手臂显示的信号,用来表达相关的 含义,指示列车或者车辆的允许和禁止条件。
A.
固定信号
B.
手信号
C.
移动信号
D.
行车信号
【单选题】Who belongs to the motleyest part among the 30-year-old guys?
A.
30-year-old married guys.
B.
30-year-old divorced guys.
C.
30-year-old guys without a job.
D.
30-year-old single guys.
【单选题】行车有关人员手持信号旗者直接用手臂显示的信号称为(    ) 。
A.
固定信号
B.
移动信号
C.
手信号
D.
听觉信号
【判断题】通过可决系数的高低可以进行显著性判断。
A.
正确
B.
错误
【判断题】铁路行车房舍内应备有钟表,办理行车工作的有关人员,可以不备钟表。()
A.
正确
B.
错误
【多选题】与手持电动工具有关的 ( ) 需接受安全技术教育和培训。
A.
使用人员
B.
购买人员
C.
维修人员
D.
保管人员
【单选题】Who belongs to the motliest part among the 30-year-old guys?
A.
30-year-old married guys.
B.
30-year-old divorced guys.
C.
30-year-old guys with a job.
D.
30-year-old single guys.
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