在“昧经权之玅者,无格致之明”中,“格致”之义为()
A.雅致
B.标致
C.尽至
D.研究事物之理而获得知识
参考答案:D
---When did you get to know each other ?
----It was in 2008___ we spent summer vocation together.
A.that
B.when
C.before
D.since
高炉煤气、焦炉煤气和转炉煤气,其中()含CO最高。
A.高炉煤气
B.焦炉煤气
C.转炉煤气