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【多选题】
下列关于退票的说法,正确的有 ( )A.
退票只限退给客票上填明的旅客,其他人不得要求
B.
持儿童票、婴儿票的旅客要求退票,免收退票费
C.
旅客在航班的经停地点自动终止旅行,该航班未使用航段作自动放弃,票款不退
D.
退票费计算到10元,尾数四舍五入
E.
退票时款项结算方式与购票时相同
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皮皮学刷刷变学霸
举一反三
【单选题】Which is not mentioned on borrowing from a small-loan company?
A.
These companies operate differently under state laws.
B.
These companies charged lower than pawnbrokers.
C.
Most of the loans made by these companies have no guarantee.
D.
Customers must repay the loans in installment.
【判断题】假定个人服装支出同收入水平和性别有关，由于性别是具有两种属性（男、女）的定性因素，因此，用虚拟变量回归方法分析性别对服装支出的影响时，需要引入两个虚拟变量。
A.
正确
B.
错误
【多选题】What are uses of giving the example of the experiment with the mice?
A.
to give one more similar example to support the author’s point.
B.
to further illustrate that labeling can happen even without language.
C.
to test a special breed of mice.
D.
to show that mice can understand messages sent by human beings.
【多选题】Which two visits of Halley's Comet can be inferred from the comet orbiting rules in the discussion?
A.
The visit of Halley's Comet was in 1956.
B.
The visit of Halley's Comet will be in 2138.
C.
The visit of Halley's Comet was in 1910.
D.
The visit of Halley's Comet was in 2137.
【简答题】程序寄存器PC是一个( )位的寄存器,寻找范围 ( ) ,PC有( ) 功能,从而控制程序的执行顺序。
【简答题】PM2.5是造成我市冬春季节大气污染的重要原因，那么我市PM2.5的主要来源是哪一些? A交通污染 B扬尘污染 C工业污染 D生活污染
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