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【单选题】
循环 I 、 II ,均为可逆卡诺循环,且面积 S 1 > S 2 ,则A.
它们对外作功
B.
它们对外作功
C.
两循环效率 η 1 = η 2
D.
两循环效率 η 1 > η 2
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举一反三
【单选题】Sexual standards in England during the 1800s were so strict that it was considered sordid for women to reveal their legs in public.
A.
proper
B.
popular
C.
impossible
D.
indecent
【单选题】Sexual standards in England during the 1800s were so strict that it was considered sordid for women to reveal their legs in public.
A.
proper
B.
impossible
C.
popular
D.
indecent
【简答题】ual standards in England during the 1800s were so strict that it was considered sordid for women to reveal their legs in public. A. proper C. popular B. impossible D. indecentA. 7. ual standards...
【单选题】有关咽的解剖哪种说法是错的( )
A.
咽为肌性管道
B.
咽位于呼吸道和消化道的交叉处
C.
咽与食道连接处长1.5 cm
D.
咽前壁与鼻咽、口腔和喉相通
E.
咽隐窝在鼻咽前壁
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