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【简答题】
A mass m is resting on a horizontal frictionless surface attached to a spring of spring force constant k . At time t= 0 , the mass is given a sharp blow, causing it to move the right with speed v . The next time the mass will have this speed is _________________ . A. B. C. D.
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举一反三
【单选题】The boy didn't know what the population of China _________. [     ]
A.
are
B.
was
C.
were
【简答题】信息技术基础设施库通过规划指导商业用户.以商业需求来提供和管理信息技术服务的质量。信息技术基础设施库协助企业调整其信息技术服务。它包括十个流程和-项功能。其中有五个流程目标在于服务支持。 要求:简述这五个服务支持流程和目标。
【单选题】The boy didn't come to ________ life and the method to start his breathing ended up as ________ failure.
A.
/;the
B.
the;/
C.
a;a
D.
/;a
【单选题】The shop sells _____ .
A.
only school things
B.
food and drink and school things
C.
clothes
D.
shoes
【判断题】( ) 3 The shop sells toy animals.
A.
正确
B.
错误
【简答题】阅读理解 It is a Saturday morning, Mr Black and his child, Bill are in a big shop. The shop sells clothes and school things. Mr Black wants to buy a new sweater for his wife. Bill would like a T-shirt. So...
【简答题】阅读,回答问题 Mr. Green works in a shop. The shop sells,cleans and repairs(修理)hearing-(助听器). One day an old man comes in and puts one down in front of him without(没有)a word. “What’s the matter with it? ...
【多选题】商业服务基础设施的功能目标有:
A.
提供商品 目表
B.
提供安全电子支付
C.
保障商务信息的安全传送
D.
保障买卖双方的合法性
【简答题】信息技术基础设施库通过规划指导商业用户,以商业需求来提供和管理信息技术服务的质量。信息技术基础设施库协助企业调整其信息技术服务。它包括十个流程和一项功能。其中有五个流程目标在于服务支持。 要求: 简述这五个服务支持流程和目标。
【单选题】The shop sells school things _____pens , pencils ,and so on .
A.
like
B.
on
C.
in
D.
at
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