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【多选题】
恒等方程包含( )。A.
统计方程
B.
定义方程
C.
制度方程
D.
平衡方程
E.
经验方程
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皮皮学刷刷变学霸
举一反三
【单选题】Consider the title " The Analysis of Environmental Effect of Nuclear Power Plants ", which word(s) indicate(s) the research content?
A.
Analysis.
B.
Environmental Effect.
C.
Nuclear Power Plants.
【简答题】Listen to the recording again and supply the missing information. Roads, paved roads are everywhere and sometimes seem like1)___________________. But, of course, roads are not part of nature and, if f...
【单选题】电力系统的过电压分为( )两大类。(1分)加油!必过!
A.
外部过电压和短路过电压
B.
内部过电压和雷电过电压
C.
操作过电压和短路过电压
D.
雷电过电压和大气过电压
【单选题】You'd better think about the environmental effect of the shopping you use the plastic bags.
A.
despite
B.
when
C.
if
D.
because
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