下列哪种方式不能达到减轻力的目的()
A.减小面颊舌径宽度
B.加大面颊舌外展隙
C.加深面沟槽
D.锐利牙尖
E.减小面颊舌外展隙
参考答案:E
Cribbing is().
A.wooden blocks or dunnage placed between a deck load and the deck
B.the chains and shackles used to secure to deck cargo
C.a crate in which a deck cargo is packaged
D.cardboard separation pieces placed between deck loads to prevent chafing
京九铁路在江西境内的长度为( )公里。
A.780
B.768
C.732
D.705