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【判断题】
集成运算放大器是一种高增益直接耦合多级放大器。 ( )A.
正确
B.
错误
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举一反三
【简答题】Manufacturers mentioned in the passage were obliged to make the best of warning labels sb as to ______ .
【简答题】Manufacturers mentioned in the passage were obliged to make the best of warning labels so as to ______.
【简答题】The manufacturers shall, before the goods is delivered ______ , make a precise and comprehensive inspection of the goods ______ regard to its quality, specifications, performance and quantity, weight,...
【单选题】It seems that manufacturers will remain reluctant to make improvements unless ______.
A.
they can do so at a very Iow cost
B.
they find their machines hard to operate
C.
they have difficulty selling their products
D.
they receive a lot of complaints about their machines
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