The Rhus can be exploited as much as possible every year.
查看答案
The raw lacquer of the first chop is for draining purpose only and can be discarded.
The raw lacquer won't make people allergic.
How many years should Rhus rest after it is cut for lacquer for 1 year?
A. 5years
B. two years
C. half a year
Lacquer is used for various purposes except
A. medicine
B. fuel
C. coating
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