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【单选题】
下列说法中，正确的是：A.
熵减的吸热反应可能是自发反应
B.
已知C(石墨，s)＝C(金刚石，s) △ H ＞0 则金刚石比石墨稳定
C.
使用催化剂既不会改变反应的限度又不会改变反应焓变
D.
己知2C(s)＋2O 2 (g)＝2CO 2 (g)) △ H 1 2C(s)＋O 2 (g)＝2CO(g) △ H 2 ，则△ H 1 ＞△ H 2
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【简答题】The feed rate specified in F code is effective until ________.
【简答题】反馈式正弦波振荡器由（）、选频网络、反馈网络三部分组成。
【简答题】effective的比较级是( )
【单选题】There are at least three ways to promote more effective use of the earth's resources for food: cultivate the oceans, develop higher-protein cereals, and increase the palatability of rarely consumed fo...
A.
increasing food supply by fish farming
B.
regulating off-shore fishing
C.
imposing quotas on the quantity of fish annually caught
D.
decreasing fish consumption in order to protect ocean resources
【简答题】We believe the e-learning can be (effective)________than traditional instructions in the future.
【简答题】It's said that the agreement ______ between the two companies last month will become effective from May 1st. A) to sign B) signed C) to be signed D) signing
【单选题】Studying in an English-speaking country is a very effective way to learn English.
A.
True
B.
Fasle
【简答题】6A级-Today, as natural resources become scarcer and manufacturing costs rise, recycling is (important) _____ than ever.
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