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【判断题】
不同功率因数下的 与 和负荷功率因数的关系曲线中,年最大负荷利用小时假如为5000h,那么功率因数越小,对应的年最大负荷损耗小时越大。A.
正确
B.
错误
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【简答题】B. Add the main points below under the correct topic sentence. 1. The cost of airplane tickets gets higher every year. 2. Travelers are on international flights for long periods of time. 3. More and m...
【多选题】真理的客观性表现在
A.
在真理性的认识中，包含着不以人和人类意志为转移的客观内容
B.
检验真理的标准是客观的
C.
真理的内容虽然是主观的，但是也有客观性
D.
在真理性的认识中，包含着不以人和人类意志为转移的客观内容
E.
一切真理都具有客观性
【单选题】Many an airplane ____in the exhibition.
A.
has been shown
B.
are shown
C.
has shown
D.
shown
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