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【单选题】
比较两个总体平均指标的代表性大小时,应采用的标志变异指标是( )A.
全距
B.
平均差
C.
标准差
D.
标准差系数
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【简答题】A．Parents' scolding children on videotape. B．Parents' ignorance of children in class. C．Parents' drug abuse with children. D．Parents' ill-treatment on children.
【单选题】_____ close parents are to their children has a strong influence on the character of the children. [ ]
A.
That
B.
What
C.
Where
D.
How
【单选题】属品种经营型,其单位面积投资成本略低,生产周期较短,因此相对较易适应市场。行业内的大多数苗农均集中在这一领域,低质及同质化竞争激烈,供应商的议价能力较弱。但因其种类繁多,产品间的替代效应明显,购买者可因此压价,如无新品种和新技术则很难规模发展。这是对哪种产品结构经营类型的描述?
A.
野生资源收集贸易型
B.
大中规格乔木生产经营型
C.
小乔木及花灌木生产经营型
D.
地被花卉生产经营型
【单选题】How close parents are to their children ________ strong influence on the character of the children. [ ]
A.
have
B.
having
C.
has
D.
to have
【简答题】这是哪种展位类型?
【单选题】It was rather____ of you to have forgotten the appointment.
A.
thoughtful
B.
thoughtless
C.
doubtful
D.
doubtless
【简答题】A．Most parents in Britain smack their children. B．Very few parents smack their children every day. C．Many parents fail to see things from the child's point of view. D．If children misbehave, they have ...
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