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【简答题】
采购的流程分为11步,请分别填写。(答案见教材,最好不要写错字啊,不然系统识别为错的)
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皮皮学刷刷变学霸
举一反三
【简答题】汽车上装备ASR的目的就是在驱动时将驱动轮的滑转率控制在____范围内,以提高____和____。
【简答题】Scientists say it may be five or ten years ________ it is possible to test this medicine on human patients. A) since B) before C) after D) when
【单选题】右图为人体心脏与血管的部分结构示意图,下列叙述正确的是
A.
若血液由 a 向 b 流动,则该血管是肺动脉
B.
若血液由 b 向 a 流动,则该血管是下腔静脉
C.
若血液由 a 向 b 流动,则该血管内流的是动脉血
D.
若 b 处为抽血时针刺入的部位,则该血管是静脉
【单选题】Scientists say it will be five or six years _____ it is possible to test this medicine on human patients.
A.
before
B.
that
C.
since
D.
when
【单选题】Scientists say it may be five or ten years ______ it is possible to test this medicine on human patients.
A.
since
B.
when
C.
after
D.
before
【简答题】Scientists disagree on the date, but some say it may be much earlier than anyone thought.(翻译)
【单选题】Scientists say it will be five or six years __________ it is possible to test this medicine on humans.
A.
after
B.
before
C.
since
D.
when
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