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[主观题]
What was the obesity rate among the general Britons in 1980?A.15%B.17%C.7%D.5%
What was the obesity rate among the general Britons in 1980?
A.15%
B.17%
C.7%
D.5%
![](https://lstatic.shangxueba.com/sxbzda/h5/images/tips_org.png)
What was the obesity rate among the general Britons in 1980?
A.15%
B.17%
C.7%
D.5%
第3题
在巷道掘进断面中岩层面积占掘进断面面积的1/5~4/5的巷道称为()。
A.半煤岩巷
B.岩巷
C.煤巷
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