疏散()物品时,应分类放置,划出警戒线,禁止无关人员靠近。
A.易燃
B.易爆
C.易挥发
D.腐蚀性
参考答案:A, B, D
方向电路正向时,该区间所有闭塞分区的FQJ均处于吸起状态。
Which record of his do they say _________best in their shop?
A.sells
B.to sell
C.is sold
D.selling