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【单选题】
叠加定理可以叠加的电量有( )A.
电流
B.
电压
C.
功率
D.
电压、电流
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反馈参考答案：
举一反三
【单选题】设备的经济寿命是指从开始投入到( )的使用年限。 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
A.
经常发生故障 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
B.
设备报废 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
C.
维修费大于其收益 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
D.
其年度费用最小 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
【单选题】He had read widely but seldom thought deeply, so his apparent learning was really quite ( ).
A.
superior
B.
superficial
C.
superfluous
D.
supernatural
【单选题】He had _______ escaped by bribing a guard.
A.
transparently
B.
parentally
C.
apparently
D.
apparent
【简答题】(apparent) He had ___________ put on his best clothes for this morning’s meeting.
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