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【单选题】
单选:不属于新民主主义革命时期的统一战线的是( )A.
工农民主统一战线
B.
抗日民族统一战线
C.
人民民主统一战线
D.
新时期爱国统一战线
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反馈参考答案：
举一反三
【简答题】集装箱货流的四种组织形式是:( )、( )、( )、( )。
【单选题】Which one of the following material can not be used for insulating and arc extinguishing in a high voltage circuit breaker?
A.
Electric insulating oil.
B.
Vacuum
C.
Sulfur hexafluoride.
D.
Carbon dioxide.
【单选题】Which statement is TRUE concerning insulating flanges ________．
A.
They should be inspected and tested periodically to ensure that the insulation is clean and in good condition
B.
Switching off a cathodic protection system may be substituted for using an insulating flange
C.
The measured resistance value after installation should be less than 1，000 ohms
D.
After the insulating flange is installed，hot work may be performed on deck
【简答题】请简述DRNC820业务处理子系统的数据处理单元的实现单板，功能模块组成及作用
【简答题】insulating
【简答题】Insulating and sealing up your house can save you ______.
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