眶骨壁破坏多见于________,无名线消失提示________或________。
参考答案:恶性肿瘤;蝶骨嵴脑膜瘤;转移癌
下列说法中,不能证明地球是一个球体的是 ( )
A.人造卫星上拍摄的地球照片
B.站得高,看得远
C.月食现象
D.根据太阳、月亮的形状推测
For an OSV not on an international voyage,an approved substitute for an impulse projected type line throwing appliance is a().
A.spring-loaded line thrower
B.hand thrown buoyant line
C.shoulder type line throwing gun
D.heaving line