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【单选题】
客舱释压信号出现时，乘务员不应A.
停止服务工作;
B.
先指导旅客戴上氧气面罩，然后自己再戴;
C.
就近坐好并系好安全带;
D.
携带手提式氧气瓶立刻巡舱;
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举一反三
【单选题】Pi decides to leave the strange floating island because _________in Life of Pi.
A.
he worries no one will ever find him there
B.
wild beasts inhabit it
C.
there is nothing for him to eat
D.
the vegetation is man eating
【简答题】根据短文内容选择正确答案。 Here is a new pi cture. There are four boys and three girls in the room. They are all students. The boy on the desk is Jim. The girl near the window is Kate. Jim's sister Jane is on the ...
【单选题】in Life of Pi ,Pi decides to leave the strange floating island because _________.
A.
he worries no one will ever find him there
B.
wild beasts inhabit it
C.
there is nothing for him to eat
D.
the vegetation is man eating
【单选题】In a capillary, Pc is 30mmHg,Pi -2mmHg, πp is 25mmHg, and πi is 2mmHg. What is the direction of fluid movement and the net driving force?
A.
Absorption;6mmHg
B.
Absorption;9mmHg
C.
Filtrration; 6mmHg
D.
Filtrration; 9mmHg
E.
There is no net fluid movement
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