在己敷设的煤气管道下面，不得修建和煤气管道无关的建筑物和存放（）。
A、易燃、易爆物品
B、易燃品
C、有毒物品
D、化学物品
参考答案：A
One of my close friends made great progress in her studies so her teachers ___ her, and I _____ her.
A．were happy with; was happy with
B．were happy for; was happy for
C．were happy with; was happy for
D．were happy for; was happy with
转K3型旁承弹性档、橡胶块，应在配件制造质量保证期限（）内无裂损、不失效。
A.4年
B.5年
C.6年
D.8年
