【单选题】If someone in Israel today needs a repairman in case of a power failure, ________.
A.
they can have it fixed in no time
B.
it’s no longer necessary to make an appointment
C.
the appointment takes only half a day to make
D.
they only have to wait half an hour at most
【单选题】if someone in Israel today needs a repairman in case of a power failure ______ .
A.
they can have it fixed in no time
B.
it's no longer necessary to make an appointment
C.
the appointment takes only half a day to make
D.
they only have to wait half an hour at most
【单选题】人们购买商品时希望“物美价廉”,这反映了人们( )。
【单选题】在波兹曼的教育著作中,你最想尽快阅读的是哪一本
【单选题】How did Israel and Palestine respond to the court ruling?
B.
Israel was forced to accept it.
C.
Palestine accepted it with pleasure.
D.
Palestine still asked more.
【单选题】根据经验,多重共线性产生的经济背景和原因主要有 ( ) 。 A . 经济变量之间往往存在同方向的变化趋势 B . 经济变量之间往往存在着密切的关联度 C . 在模型中引入滞后解释变量容易产生多重共线性 D . 在模型中引入滞后被解释变量也容易产生多重共线性 E . 在建模过程中由于解释变量选择不当,引起了变量之间的多重共线性