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【简答题】
若一个空间中各力作用线平行于某一固定平面，则此有_______________个独立的平衡方程。
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反馈参考答案：
举一反三
【简答题】We look to working with you again.
【单选题】下列说法错误的是( )
A.
电子商务系统的框架结构中的服务层又称为电子商务平台
B.
电子商务系统的框架结构的主体4层，自下而上的顺序是网络层、传输层、服务层、应用层
C.
电子商务的社会环境包括公共政策、法律法规以及安全协议技术标准两大方面
D.
电子商务的安全协议不包括S/MIME
【单选题】听力原文：W: Hi, Bob! We've been working hard at our lessons for a fortnight. So why don't we take it easy this weekend? M: Okay! What do you suggest? W: How about seeing a play? I hear 'Hamlet' is on at t...
A.
Because they' ve been working hard at their jobs.
B.
Because they' ve been studying hard for some time.
C.
Because they long to see a play.
D.
Because they think that 'Hamlet' is worth seeing.
【单选题】By no means _______ look down upon the disabled。
A.
should we
B.
we should
C.
we shall
D.
we ought
【单选题】Forum for the Future,working with Tesco and Unilever,reckon that by 2022 what we buy,how we buy it and who from will have changed radically. In their report,Retail Futures,they look ahead 15 years to ...
A.
The big retailers and experts have forecast an individualistic,optimistic society where technology is held in very high regards.
B.
The big retailers and experts have gazed into the future and seen a new world of shopping.
C.
The big retailers and experts have recognized that the economy is buoyant and big busiess will met shoppers' demands.
D.
The big retailers and experts have predicted that consumer confidence will be low and people rely on big business for security.
【单选题】.It was in the 1990s _______ we were working together ____ we made friends with each other.
A.
that; when
B.
when; that
C.
that; that
D.
when; when
【单选题】If we_____all night we_____in time; but we have no intention of working all night
A.
work, will finish
B.
had worked, would have finished
C.
worked, will finish
D.
worked, would finish
【单选题】The more we look at the painted picture hung on the wall, ______.
A.
we like it less
B.
less we like it
C.
the less we like it
D.
we less like it
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