题目内容
当免维护蓄电池的充电指示器显示绿颜色是表示需要充电。（ ）
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发动机每次启动时间不宜超过5s。（ ）
点火线圈其实就是个变压器，将蓄电池12V的低压电变为15kV-30kV的高压电。（ ）
52. Directions:Write an essay of 160-200 words based on the following drawing. In your essay you should1) describe the drawing briefly2) explain its intended meaning, and3) give your commentsYou should write neatly on ANSWER SHEET. (20 points）
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