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【多选题】
投标担保可以采用保证担保、抵押担保等方式，其具体的形式有很多种，通常有（ ）。A.
现金
B.
银行汇票
C.
现金支票
D.
可撤销信用证
E.
支票
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举一反三
【单选题】Should the present unemployment continue, the society________a more troublesome situation.
A.
would have faced
B.
would face
C.
is facing
D.
has faced
【单选题】If the world was really like what the figure pictures, then each individual today would have only one ______ a hundred or a million generation.
A.
manufacturer
B.
offspring
C.
descendant
D.
ancestor
【单选题】If it______another ten minutes, the game would have been called off.
A.
had rained
B.
would have rained
C.
have seen
D.
rained
【简答题】音频信号在时间和幅度上都是连续变化的 信号
【简答题】维生素A又称为____,是淡黄色针状结晶物,在空气中易被氧化,属于脂溶性维生素。
【简答题】阅读理解 It's true that s don't get enough sleep, but changing the school starting time would have a chaotic _ effect and throw everyone off balance. Scientists have shown that s are more active l...
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