题目内容
火花塞更换的标志是跳火,或电极放电部分因烧蚀而成圆形。
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库存配件应严格执行先进先出的原则,尽量减少配件的在库时间,是库存不断更新。
Many rich people who live in large ____areas leave the city in the summer and go to the mountains or to the seashore.
In the summer of the year 79 ____, a young Roman boy was visiting his uncle at Pompeii.
Pliny saw the____of the volcano called Mount Vesuvius
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