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【单选题】
Match slope to it's Chinese meaningsA.
边界条件
B.
积分
C.
挠度
D.
斜率
E.
曲率
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反馈参考答案：
举一反三
【单选题】空气是常见的混合物,包含各种气体,气体的扩散是熵增自发的过程,但若将空气中的组分进行分离则是非自发的,现设空气中含氧 21% (体积),若在 25 °C 下将空气可逆分离成 95% (摩尔分数) O 2 的气氧和 99%N 2 的气氮,该分离的最小功为()。
A.
50 kJ/mol
B.
106 kJ/mol
C.
250 kJ/mol
D.
180 kJ/mol
【单选题】They took off their coats and went to the table near the window.
A.
off
B.
to
C.
near
【简答题】they took off their clothes and there were no more (9)___________.
【单选题】Two of the words have the same grammatical function in the sentence. One does NOT. Choose the letter (A, B or C) which does NOT have the same grammatical function. They took off their coats and went t...
A.
off
B.
to
C.
near
【简答题】clinic______
【单选题】As time went by, they found their efforts to help students ________. [ ]
A.
showed off
B.
took off
C.
put off
D.
paid off
【单选题】Two of the words have the same grammatical function in the sentence. one does Not. Choose the letter (A, B or C) which does Not have the same grammtical function. They took off their coats and went to...
A.
off
B.
to
C.
near
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