髁状突颈部发生骨折约占下颌骨折的（）
A.15％
B.25％
C.35％
D.45％
E.55％
参考答案：B
要约邀请又称为______，是指希望他人向自己发出要约的______。
It is good practice to use long towlines for ocean tows because the（）.
A.wear on the towline is equalized
B.weight of the towline increases the towing force
C.dip in the towline absorbs shock loads
D.danger of overriding is reduced
