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【简答题】
25 °C C 2 H 4 (g) 的 D c H m y = - 1410 . 97 kJ × mol - 1 ; CO 2 (g) 的 D f H m y = - 393 . 51 kJ × mol - 1 , H 2 O(l) 的 D f H m y = - 285 . 85 kJ × mol - 1 ,则 C 2 H 4 (g) 的 D f H m y = 。
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【单选题】There seemed little hope that the explorers, ______ in the rainforest, would find their way out.
A.
having deserted
B.
to have been deserted
C.
to be deserted
D.
having been deserted
【单选题】There seemed little hope that the explorer,____in the tropical forest, would find bis way out.
A.
having been deserted
B.
having deserted
C.
to have been deserted
D.
to be deserted
【单选题】There seemed little hope that the explorer, ______in the tropical forest, would find his way out.
A.
having been deserted
B.
having deserted
C.
to have been deserted
D.
to be deserted
【单选题】同一会计年度内开始并完成的劳务，应当( )，确认提供劳务收入。
A.
按完工百分比法
B.
在提供劳务交易完成且收到款项或取得收款权利时
C.
在收到款项时
D.
在资产负债表日
【单选题】The little girl showed no anxiety before the competition. She seemed _____ for it pretty well. A
A.
26. The little girl showed no anxiety before the competition. She seemed _____ for it pretty well. A．to prepare
B.
to have prepared
C.
having prepared
D.
to be preparing
【简答题】___________ seemed a little bit ____________ (a).
【单选题】There seemed little hope that the explorer, ______in the tropical forest, would find his way through it.
A.
to be deserted
B.
having deserted
C.
to have been deserted
D.
having been deserted
【单选题】There seemed little doubt that the spread of a particular cultural trait did follow a specific regular pattern______.
A.
as a society adopted
B.
which a society adopted it
C.
as a society adopted it
D.
when a society adopted
【简答题】当连杆弯扭变形并存时,应( )
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