采用矿用防爆柴油机动力装置，油箱和（）路必须用不燃性材料制造。
参考答案：管
Many of the road signs and advertising billboards are now in English, Beijing more accessible to foreigners.
A．making
B．made
C．to make
D．having made
患者胃脘刺痛，痛有定处而拒按，食后痛甚，舌质紫暗，脉涩。其证候是
A．气机阻滞B．食积气阻C．瘀血停滞D．血瘀血虚E．气虚血瘀
