高炉采用萤石洗炉时,渣中CaF2含量一般要求控制在()。
A、洗炉墙约5%、洗炉缸2~3%
B、洗炉墙2~3%、洗炉缸5%
C、均为2~3%
D、均为5%左右
参考答案:B
. At the age of 29, Dave was a worker, ________ in a small apartment near Boston and ________ what to do about his future.
A.living; wondering
B.lived; wondering
C.lived; wondered
D.living; wondered
葛根芩连汤的功用是()
A.解表清里,升清止泻
B.疏风解表,清热通便
C.清热解毒,疏风散邪
D.发汗祛湿,兼清里热
E.解表散寒,温肺化痰