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【单选题】
系统经不可逆绝热过程后,其熵变()。A.
大于零
B.
小于零
C.
等于零
D.
不定
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反馈参考答案：
举一反三
【单选题】According to the author, when a doctor tells a patient to 'return next Wednesday', the doctor is in fact
A.
instructing the patient to buy more medical services.
B.
warning the patient that a hospital stay might be necessary.
C.
advising the patient to seek a second opinion.
D.
admitting that the initial visit was ineffective.
【单选题】According to the author, when a doctor tells a patient to 'return next Wednesday', the doctor is in effect ______.
A.
advising the patient to seek a second opinion
B.
admitting that the initial visit was ineffective
C.
instructing the patient to buy more medical services
D.
warning the patient that a hospital stay might be necessary
【多选题】下列关于肺动脉走行的描述哪些正确
A.
其走行异常是判断右心增大的重要依据
B.
肺动脉主干自前下向后上走行
C.
上腔静脉后方为右肺动脉干
D.
其下方为主动脉弓
E.
与右心室相连
【单选题】According to the author, when a doctor tells a patient to 'return next Wednesday', the doctor is in effect ______.
A.
taking advantage of the patient's concern for his health
B.
instructing the patient to buy more medical service
C.
warning the patient that a hospital stay might be necessary
D.
advising the patient to seek a second opinion
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