I don't have rulers. But I have erasers.[ ]
A. any , any
B. any , some
C. some , any
答案:B
对西咪替丁无效的卓-艾综合征最宜选用
A.硫糖铝B.雷尼替丁C.氢氧化镁D.奥美拉唑E.法莫替丁
窗口高宽比较小时,火焰(或热气流)贴附外墙面的现象明显,使火势很容易向上方蔓延发展。()