纺织材料的机械性质是指纤维、纱线、织物等在机械作用时的力学性质,总体包括了拉伸、()、()、()、()、()、疲劳等方面的作用。
参考答案:弯曲;压缩;扭转;摩擦抱合;磨损
_________, I always feel I want a few more days.
A.However long is a vacation
B.However long a vacation is
C.However is a vacation long
D.However a vacation is long
采用方向性天线的Inmarsat移动站是()①Inmarsat-B;②Inmarsat-F77;③Inmarsat-mini-C;④Inmarsat-C
A.①②
B.③④
C.①②③
D.①④