invent / discover a) It was in 1492 that Columbus _________________ America. b) The telephone, which __________ by Bell in 1876, was a great improvement on the telegraph. c) Gilbert ____________ electricity, but Edison _____________ the light bulb.
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【单选题】在输出Gerber时,若出现The Film is too small for this PCB错误信息,应如何处理?