倾角小于25℃的煤层为()。
A、近水平煤层
B、缓倾斜煤层
C、倾斜煤层
D、急倾斜煤层
参考答案:B
在1995~2001年7年中,第一、第二、第三产业中,从业人员最多的年份比从业人员最少的年份多出()
A.10%
B.12%
C.107%
D.7%
Some biologists believe this is an ancient survival strategy, _______ a diet with 30 percent
fewer calories than usual increased life span.
A.for which
B.to which
C.of which
D.in which