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【单选题】
在绝热条件下,用大于气缸内的压强迅速推动活塞压缩气体,气体的熵变( )A.
大于零
B.
小于零
C.
等于零
D.
不能确定
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反馈参考答案：
举一反三
【单选题】There are ( ) ways for marketers to conduct business through e-commerce.
A.
one
B.
two
C.
three
D.
four
【判断题】You have noticed that business marketers build close long-run relationships with customers compared to consumer marketers.
A.
正确
B.
错误
【判断题】The business activities of international marketers are not affected by competition in their domestic market.
A.
正确
B.
错误
【判断题】The push promotion strategy tends to be used by business-to-business marketers.
A.
正确
B.
错误
【判断题】The business activities of international marketers are not affected by competition in their domestic market.
A.
正确
B.
错误
【多选题】呼吸的过程是气体交换的过程,气体交换包括肺换气和组织换气,都是以单纯扩散方式实现的,气体的扩散方向总是( )移动,直至动态平衡
A.
压强高处向压强低处
B.
分压高处向分压低处
C.
压强低处向压强高处
D.
分压低处向分压高处
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