可燃气体检测仪报警(高限)设定值应小于或等于可燃气体爆炸下限浓度(以体积百分数表示)值的25%。
参考答案:对
—Hurry up!(快点) There an NBA basketball game in ten minutes.
—OK.
A.is
B.will have
C.is going to be
D.is going to have
什么是象形文字?