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【单选题】
某工程构件,材质为 Q235 钢,其屈服极限 σ s = 240 MPa ,若安全系数取 n = 1.5 ,则相应的应力 [ σ ] 为 ( )。A.
360 MPa
B.
235 MPa
C.
160 MPa
D.
352.5 MPa
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【单选题】The fact that a tax is__________ on fuel infuriates the taxi drivers, so they decide to go on strike to protest against it.
A.
enforced
B.
impressed
C.
ordered
D.
imposed
【单选题】So much ______ worry about her Son ______ she can't sleep at night.
A.
she does...that
B.
does she...and
C.
she does...and
D.
does she...that
【多选题】在网络化的情况下，顾客概念及顾客行为发生了很大变化，下面四个属于消费变化的为：()
A.
顾客从大众中分离
B.
顾客直接参与生产和商业流通
C.
大范围地选择和理性的购买
D.
顾客追求价廉物美
E.
顾客追求时尚
【多选题】在网络化的情况下，顾客概念及顾客行为发生了很大变化，下面选项中属于消费变化的为：（）。
A.
顾客从大众中分离
B.
顾客直接参与生产和商业流通
C.
大范围地选择和理性的购买
D.
顾客追求价廉物美
E.
顾客追求时尚
【单选题】If drivers decide to make phone calls without considering the costs imposed on others, the:
A.
number of phone calls made while driving will be more than the socially optimal quantity.
B.
number of phone calls made while driving will be fewer than the socially optimal quantity.
C.
marginal social cost curve will lie below the marginal cost of production curve.
D.
marginal social benefit curve will lie below the marginal social cost curve.
【简答题】A．She can't sleep well these days. B．She is not good at some subjects. C．She is under the pressure of her parents' love. D．She has suffered from headache.
【单选题】A.She called the police.B.She got a sound sleep.C.She attended a ball.##
A.
She called the police.
B.
She got a sound sleep.
C.
She attended a ball.
D.
She didnt sleep at all.
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