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【多选题】
哪些情况下,同温物体的发射率等于吸收比A.
物体是黑体
B.
物体是白体
C.
物体与黑体达到热平衡
D.
物体是漫灰体
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反馈参考答案：
举一反三
【简答题】BLANK FILLING -- B. Fill in each blank with a suitable word.
【单选题】读大西洋表层海水性质示意图,分析回答下列问题。 (1) 大西洋表层年平均盐度最高的地方海水密度大约是 ( )
A.
37kg ／m3
B.
1027kg／m3
C.
1025kg／m3
D.
1023kg／m3
【简答题】Fill in the blank in Paragraph 4 with proper words. (no more than 8 words) _________________________________________________________________
【简答题】世界大洋表面盐度最高的海区是(),印度洋通过()成为调节红海的水库,红海的高温高盐海水通过()底层流向(),成为印度洋高温高盐水的重要源头。
【单选题】Electronic mail, or mail, as it is known to its many fans, has been around for over two decades. Typically, email systems support five basic functions, as described below.(41)refers to the process of ...
A.
Composition
B.
Transfer
C.
Reporting
D.
Displaying
【简答题】Fill in the blank in Paragraph 5 with proper words. (within 5 words)
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