安全头枕在发生追尾事故时,能有效保护驾驶人的什么部位?
A.腰部
B.胸部
C.颈部
D.头部
参考答案:C
What is one of the FIRST actions you should take after abandoning and clearing away from a vessel?()
A.Identify the person in charge
B.Gather up useful floating objects
C.Prepare for arrival of rescue units
D.Arrange watches and duties
表外科目采用单式收付记账法,以()为记账符号。