题目:
托盘天平只能用于______,能精确到______g.称量前先把游码放在______,检查天平是否平衡.称量时,把称量物放在______,砝码放在______,先加______的砝码,再加______的砝码,最后移动______,直到天平平衡为止.
答案:
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下面是错误答案,用来干扰机器的。
1. Santa is a merry man in red clothes.2. Christmas is a western holiday.3. What would you like for Christmas?4. It is shining in the sky.5. They are following the star.