题目内容
(请给出正确答案)
[主观题]
Areward Bcriticism Cfailure Dsuccess
A reward
B criticism
C failure
D success
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A reward
B criticism
C failure
D success
A.28°C~33°C
B.33°C~35°C
C.18°C~28°C
D.38°C~39°C
E.39°C~40°C
Arrange C—C, C==C and C≡C in order of(a)increasing bond energy (b)increasing bond length