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【判断题】
（ ）真空中不同频率电磁波的速度是相同的。A.
正确
B.
错误
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举一反三
【简答题】From Thomas Paine ’ s The Cr
【单选题】Carl Stehle told his students Thomas Paine' s story in order to ______.
A.
teach the students how to write an essay on preventing polystyrene from harming the environment
B.
inspire the students to do something to persuade the Board of Education to change its decision
C.
ask the students to work hard together to fight against the decision made by the Board of Education
D.
let them know the power and influence of the effective essay written by Thomas Paine in the past
【简答题】If A=[7,4,5;7,5,6],B=[9,5,4;1,2,6],let C=[A-B],so C=(_);
【简答题】If A=[9,5,6],B=[7,4,8],let C=[A.*B],so C=(_);
【简答题】Except Common Sense, Paine s the other two famous works were______and______.
【简答题】If A=[7,8,9,7],B=[4,1,5,6],C=[7,4,5,9],do D=A.*B-C,so sum(D)=(_);
【多选题】下关于支票的规定错误的有（ ）。
A.
支票的出票人签发支票的金额可以超过付款时在付款人处实有的金额
B.
签发空头支票按票面金额处以5%但不低于10000元的罚款
C.
支票的金额、收款人名称欠缺时支票无效
D.
用于支取现金的支票不能背书转让
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