叉车满载将货物起升到最大高度进行码垛时,由于门架后倾,货物及货叉重心后移,货物与货叉及叉车自重的合力重心后移会使()侧翻的可能性将越大。
A、纵向
B、横向
参考答案:B
— Mom, can you give me an extra 200 yuan a month?
— Son, we have just bought a house, and from now on we need to practice strict ______.
A.economy
B.medicine
C.self-control
D.patience
窄轨铁路的轨距为762mm或()mm。