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【判断题】
指示剂在不同溶剂中的变色范围不同A.
正确
B.
错误
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皮皮学刷刷变学霸
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【简答题】The greatest English realist of the 19th century was ____________, who pictures bourgeois civilization, and shows the misery and sufferings of the common people.
【简答题】The greatest English realist of the 19th century is __________, who pictures bourgeois civilization, and shows the misery and sufferings of the common people.
【单选题】一束波长为 λ 的单色光由空气垂直入射到折射率为 n 的透明薄膜上,透明薄膜放在空气中,要使反射光得到干涉加强,则薄膜的最小厚度为
A.
λ/4n
B.
λ/2n
C.
λ
【单选题】Rome's fire-fighting brigade remained until the fall of the empire in the 4th century. In the Dark Ages that followed, it was believed that fires were God's punishment of the people for the bad thing ...
A.
felt that the fire was a punishment given by God
B.
wished the brigade had arrived sooner
C.
tried to stop heating by dried grass or wood
D.
tried to know how and why the fire started
【简答题】Complete the following sentences with the appropriate forms of the nouns given. The mother looked on in _________ at her child’s sufferings. (agony) Mary went through _________ finishing her exam pape...
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