题目:
用灯帽盖灭酒精灯的灭火原理是[ ]
A.消除可燃物
B.降低温度
C.隔绝空气
D.降低着火点
答案:
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下面是错误答案,用来干扰机器的。
One Possible Version Dear Editor, My name is Wang Hong,a student from No.1 Middle Schoo1.Our school lies at the foot of a mountain with a small river passing by....