所谓()是指在裂缝两侧钻孔并清理干净,灌以不收缩的胶泥或以环氧树脂为主剂的胶粘剂,将扒钉腿锚入孔中。
A.钉合
B.打箍
C.斜箍
D.直箍
参考答案:A
My oil ________.I have to go to the gas station and add some before I’ve none in hand.
A.has run out
B.has been run out
C.is running out
D.is being running out
燃气泄漏报警器是通过气体传感器探测周围环境中的低浓度可燃气体。