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【多选题】
影响肺换气的因素有哪些?A.
呼吸膜的厚度
B.
呼吸膜的面膜
C.
肺通气阻力
D.
通气/血流比值（ V A /Q）
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皮皮学刷刷变学霸
举一反三
【单选题】Help is needed for families _________ homes were destroyed during the earthquake.
A.
which
B.
when
C.
whose
D.
where
【单选题】听力原文： Professor (female) Whos seen Rebel Without a Cause?You know, the classic James Dean movie...the one where he plays a troubled teenager. Dean gives an intense performance, doesnt he? He broods, h...
A.
Actors who became famous as a result of method acting.
B.
Different approaches to method acting in modern American theater.
C.
The history of Russian theater in the twentieth century.
D.
Two important figures in the development of method acting.
【简答题】管理开发中，管理培训项目要以()为核心。 A企业经营战略 B提高绩效标准 C企业经营哲学 D人力资源战略
【简答题】一台三相电动机,每组绕组的额定电压为220V,对称三相电源的线电压U L =380V,则三相绕组应采用( )。A. 星形联结,不接中性线 B. 星形联结,并接中性线 C. A. b均可 D. 三角形联结
【简答题】铜的主要污染源是_____ 冶金五金加工,矿山开采石油化工和化学工业等部门排放的污水。
【单选题】The young man _____ visited our school this morning is Maria ’s brother.
A.
who
B.
which
C.
whose
D.
what
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