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【判断题】
电弧电压主要由弧长决定,它是指从熔化的焊条顶部到熔池表面最短的距离。A.
正确
B.
错误
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【单选题】Choose the phrase that is closest in meaning to the underlined part. Many of these early systems had advantages that seemed exciting and promising when demonstrated with “toy” programs , but ran into ...
A.
showed attractiveness and usefulness for game applications
B.
appeared attractive and hopeful when applied to small test programs
C.
seemed to be excited and promised when used as demos in game applications
D.
showed excitement and promises when executing unrealistic programs
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