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【单选题】
某理想气体CV,m=2.5R。今有1 mol该气体恒压降温50 ℃。求过程的ΔH。
A.
-1.455KJ
B.
-7.275KJ
C.
-5.196KJ
D.
-7.275J
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举一反三
【单选题】Which of the fol1owing did not belong to the language areas?
A.
The sensory 1anguage area
B.
The visual language area
C.
The motor language area
D.
The writing language area
E.
None of the above
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【单选题】— No wonder you caught a cold. You __________ out last night without a coat. — I know how silly I was.
A.
should have gone
B.
shouldn’t have gone
C.
can’t have gone
D.
mustn’t have gone
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A.
记忆力
B.
观察力
C.
思维力
D.
注意力
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【单选题】--- Why is Jenny still standing there? It’s so cold. —She _____ for someone.
A.
can wait
B.
might have waited
C.
must be waiting
D.
should have waited
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【单选题】智力的核心成分是
A.
记忆力
B.
思维力
C.
观察力
D.
注意力
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【简答题】智力的核心成分是（ ）
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【单选题】决定物质单纯扩散方向的是
A.
浓度梯度
B.
电位梯度
C.
温度
D.
细胞通透性
E.
载体的浓度
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【判断题】决定单纯扩散方向和通量的驱动力是物质的浓度梯度。
A.
正确
B.
错误
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【简答题】根据短文内容，用括号中所给词填空。 (together, bikes, wait, cold, fun, but, fishing ) Dear Tyrone, It was great to hear from you. I really miss camping at Huntington Beach too. I have never had so much 1 . Now, my dad ...
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【单选题】Once the initial cold pack is removed, what is to be done?
A.
Begin bandaging the ankle.
B.
Wait 30 minutes and then reapply the ice pack for 20 minutes.
C.
Keep the ankle in a position lower than your heart.
D.
wait 20 minutes and then reapply the ice pack for 30 minutes.
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【单选题】Which of the fol1owing did not belong to the language areas?
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The sensory 1anguage area
B.
The visual language area
C.
The motor language area
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The writing language area
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【单选题】— No wonder you caught a cold. You __________ out last night without a coat. — I know how silly I was.
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【单选题】--- Why is Jenny still standing there? It’s so cold. —She _____ for someone.
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浓度梯度
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【判断题】决定单纯扩散方向和通量的驱动力是物质的浓度梯度。
A.
正确
B.
错误
查看完整题目与答案
【简答题】根据短文内容，用括号中所给词填空。 (together, bikes, wait, cold, fun, but, fishing ) Dear Tyrone, It was great to hear from you. I really miss camping at Huntington Beach too. I have never had so much 1 . Now, my dad ...
查看完整题目与答案
【单选题】Once the initial cold pack is removed, what is to be done?
A.
Begin bandaging the ankle.
B.
Wait 30 minutes and then reapply the ice pack for 20 minutes.
C.
Keep the ankle in a position lower than your heart.
D.
wait 20 minutes and then reapply the ice pack for 30 minutes.
查看完整题目与答案