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【单选题】
氧在血液中运输方式主要是A.
溶解在血浆中
B.
与血红蛋白结合
C.
以碳酸盐的形式
D.
以上均是
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【单选题】Luckily , we'd brought a map without we would have lost our way.
A.
it
B.
that
C.
this
D.
which
【单选题】以下关于信息系统终结的关键控制点和主要控制措施的说法中，不正确的是()。
A.
系统终结是信息系统生命周期的最后一个阶段，在该阶段信息系统将停止运行
B.
信息系统终结，信息档案也随之终结
C.
企业破产或被兼并、原有信息系统被新的信息系统代替通常会导致系统终结
D.
系统终结有可能导致数据泄密
【单选题】What was Peter's job?
A.
A radio announcer.
B.
A bank employee.
C.
A car mechanic.
D.
A movie actor.
【单选题】From the first two paragraphs, we learn that ______.
A.
the townsfolk despise the RSC's actors
B.
the two branches of the RSC do not get along well
C.
the RSC produces limited quantity of plays
D.
the townsfolk deny the RSC's contribution to the town's revenue
【单选题】The rectifier uses the ability of a diode to conduct during one half cycle of ACto convert ACto DC. A single diode rectifieronly uses the positivehalf part of the AC wave to produce a half-wave varyin...
A.
整流器
B.
正半周期
C.
二极管
D.
导通
【简答题】With long brown hair, deep blue eyes, a tall and thin figure(身躯) Brad Pitt seems to be a born actor .He made his first appearance in a film in 1990.Though he was in the film for only 14 minutes, peopl...
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【单选题】Luckily , we'd brought a map without we would have lost our way.
A.
it
B.
that
C.
this
D.
which
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