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【判断题】
电路或电器着火时,可用泡沫灭火器灭火
A.
正确
B.
错误
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参考答案:
举一反三
【单选题】The meaning of the underlined word 'anonymity' (Para. 3) is closest to ______.
A.
being unknown
B.
being famous
C.
collective wisdom
D.
industriousness
【单选题】Using newly obtained petroleum industry data, scientists have identified a previously unknown earthquake fault that lies under the heart of densely populated Los Angeles, California. Details were publ...
A.
it caused a severe local earthquake in the past.
B.
it pushes older rocks on the top of younger rocks.
C.
it has three segments and covers a relatively large area.
D.
it was hidden beneath California's largest city.
【简答题】have been in London for two weeks. I don't speak English well at all. I have great difficulty in understanding people. In fact I don't catch a thing they say. I find their pronunciation is __21__ stra...
【单选题】国际电工委员会(IEC)将电流信号( )和电压信号( )确定为过程控制系统中模拟信号的统一标准。
A.
0~20mA(DC);0~5V(DC)
B.
4~20mA(DC);0~5V(DC)
C.
4~20mA(DC);1~5V(DC)
D.
0~20mA(DC);0~10V(DC)
【判断题】福建地区有着地方特色的深厚的茶文化底蕴,其中以闽南人的茶道和客家人的“擂(2声)茶”最见功夫。( )
A.
正确
B.
错误
【单选题】Emily Dickinson was a nineteenth-century American woman who lived her life completely unknown to anyone except her family and a few friends. Less than a dozen of her poems were published during her li...
A.
Sappho.
B.
Emily Dickinson.
C.
Both Sappho and Emily Dickinson.
D.
Not mentioned in the passage.
【判断题】福建地区有着地方特色的深厚的茶文化底蕴,其中以闽南人的茶道和客家人的“擂(2声)茶”最见功夫。()
A.
正确
B.
错误
【判断题】在装配柱塞滑履组时,无须清洁其接触表面,可直接装入。若遇阻滞,可用榔头将其轻轻敲入即可。
A.
正确
B.
错误
【判断题】在装配柱塞滑履组时,无须清洁其接触表面,可直接装入。若遇阻滞,可用榔头将其轻轻敲入即可
A.
正确
B.
错误
【单选题】一定温度下,在容积为2L的恒容密闭容器中充入4 mol N 2 O 3 ,发生反应:N 2 O 3 (g) N 2 O(g)+O 2 (g); N 2 O 3 (g)+O 2 (g) N 2 O 5 (g),达到平衡时,测得c(N 2 O 5 )为0.7 mol/L,c(O 2 )为0.5 mol/L,则 [     ]
A.
c(N 2 O 3 )=0.8 mol/L
B.
c(N 2 O 3 )=0.2 mol/L
C.
c(N 2 O)=0.5 mol/L
D.
c(N 2 O) =1.2 mol/L
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