不属椎间盘的组成部分是（）
A.前纵韧带
B.上软骨板
C.下软骨板
D.纤维环
E.髓核
参考答案：A
A carling is used aboard ship（）.
A.as a connecting strap between the butted ends of plating
B.to stiffen areas under points of great stress between beams
C.to prevent the anchor from fouling when the brake is released
D.to provide an extra heavy fitting in a lift cargo released
分馏系统主要控制汽油产品质量的（）
A.汽油干点
B.汽油10%点
C.汽油辛烷值
