燃气管道使用燃气铝塑复合管必需满足的条件是：（）
A.工作压力应大于10kpa
B.室内燃气工程
C.室外燃气工程
D.气源为天然气
参考答案：B
Why didn't you tell me the news of the meeting?
—I knew nothing about it, or I _______ you.[ ]
A. would tell
B. had told
C. told
D. would have told
在20m巷道范围内，涌出瓦斯量（）1.03m3/min，且持续时间在8h以上时，该采掘区域即定为瓦斯喷出危险区域。
A、大于
B、等于
C、小于
D、大于或等于
