焦炉用高炉煤气加热时,相当耗热量()用焦炉煤气加热。
参考答案:高于
When the music started, everyone in the hall began to keep ______. [ ]
A. noisy
B. quiet
C. quietly
D. slowly
在爆破地点20米范围内,如有矿车、煤、矸或其它物体堵塞巷道断面达到下列情况时严禁装药放炮()。
A.1/3
B.1/4
C.1/2
D.100%