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A．红黄标志 B．标志 C．黑白标志 D．绿白标志 E．红白标志 放射性药品
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【单选题】In a sport team each player has a clear role，and there are few occasions ___________ members are confused or uncertain of their roles.
A.
why
B.
that
C.
when
D.
in which
【简答题】二极管的特性是( ),所以二极管可以作为开关使用。
【简答题】半导体二极管的特性是什么? 半导体二极管的主要参数有哪些?
【单选题】Why did the team of 10 Americans had a goal of making history?
A.
Because it is the first team that topped Mt. Everest.
B.
Because all of the members of the team are blind men except Erik Weihenmeyer.
C.
Because one of its members is Erik Weihenmeyer, who hopes to become the first blind man to clear the famed Mt. Everest.
D.
Because all of the members of the team are old men who are eager to climb the famed peak.
【简答题】生词整理 :measure 测量,计量 Involving the whole family is the best way to promote better eating habits and healthy activities for your kids . A whole - family approach simply means that everyone - parents and...
【单选题】In a spots team each player has a clear role,and there are few occasions ___ members are confused or uncertain of their roles.
A.
when
B.
whose
C.
why
D.
which
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