【多选题】汽车底盘包括哪些组成部分 A. B. C. D.
【简答题】木材含水率在纤维饱和点以下变化(减少和增加)时,对其强度会有影响,体积也会改变;当含水率在纤维饱和点以上增减时,对木材的强度及体积无甚影响。
【单选题】When the writer told an ex-colleague about the man in the park, the ex-colleague ______ .
A.
said that Rogers was a company director
B.
said he was sure Rogers was still in prison
C.
didn' t know anything about Rogers
D.
seemed to think the man might have been Rogers
【判断题】当木材的含水率在纤维饱和点以下时,随着含水率的增大,木材的湿胀干缩变形也随着增大。 ( )
【单选题】木材的含水率在纤维饱和点以下,当含水率增加时,木材的强度( )
【单选题】Maria is from _____. She is an _____ girl. [ ]