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【单选题】
国产电动双缸四作用往复泵的型号为CDW25-0.35,对于其型号含义说法错误的是_____。
A.
25-额定扬程(m)
B.
C-船用
C.
0.35-额定排出压力(MPa)
D.
D-电动
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【简答题】Reading Comprehension Section B 43
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A.
民法
B.
刑法
C.
宪法
D.
行政法
【单选题】下面不属于内部中断的是( )
A.
除数为0
B.
非法地址
C.
非法数据格式
D.
非法指令
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A.
China has trade surpluses with the US, Asia and the rest of the world
B.
China strictly pegs the RMB to the US dollar at all times so cannot be accused of manipulating its currency
C.
China depreciated its currency after the Asian financial crisis
D.
The RMB has recently appreciated against the US Dollar which makes China’s exports more expensive (i.e. fewer RMB per USD)
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A.
约束限制杆件间的相对运动
B.
柔性约束是指只承受拉力,不承受压力的约束,包括绳索,皮带,锁链等
C.
光滑铰链约束不限制两杆件间的相对转动,只限制二者的相对位移
D.
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【多选题】下列关于测量的信度与效度的说法正确的有哪些?
A.
信度指的是测量结果的一致性,即测量手段能够准确测出所要测量的变量的程度。
B.
效度指的是测量的有效性,即测量手段能够稳定地测量所测的事物或变量的程度。
C.
缺乏信度的测量肯定是无效度的测量。
D.
具有很高信度的测量则意味着具有很高的效度。
E.
具有很高效度的测量则意味着具有很高的信度。
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A.
opposite side
B.
opposite
C.
other sides
D.
same side
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