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【判断题】
偏振片允许垂直于透光轴方向的光通过,而平行于这个方向的光则被吸收。A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】Imperfect competition can result in all of the following except:
A.
less quantity than perfect competition.
B.
a higher price than perfect competition.
C.
more economic efficiency (i.e. less deadweight loss) than under perfect competition.
D.
all of the above.
【单选题】The last sentence of Paragraph 1 means______.
A.
competition is necessary
B.
competition can bring about nothing
C.
competition is sure to result into production
D.
competition really works
【单选题】Competition can the enterprises to improve the quality and increase the variety of their products.
A.
promote
B.
prompt
C.
promotion
D.
promptitude
【多选题】关于物联网以下表述正确的是
A.
物联网被认为是继蒸汽机、电力之后的第三次工业革命。
B.
物联网可以实现物理空间和信息空间的融合。
C.
物联网是可以把各种物品与计算机网络互联起来以实现智能化识别、定位、跟踪、监控和管理的一种网络。
D.
物联网必须通过各类信息感知设备进行数据采集。
【多选题】The competition can be classified into few categories, such as ( )
A.
Perfect competition
B.
Monopolistic competition
C.
Oligopoly
D.
Monopoly
【简答题】假设你有驾照,如何防范交通风险
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