搜题请搜索小程序“爱下问搜题”
问题 单项选择题

具有整体爆炸危险但很不敏感的物质（VeryInsensitiveSubstances）属于（）类爆炸危险品

A．1.1

B．1.2

C．1.5

D．1.6

答案

参考答案：C

单项选择题

虚寒妊娠腹痛的鉴别要点是

A．妊娠腹痛
B．异位妊娠
C．胎动不安
D．胎漏
E．小产
查看答案
单项选择题

A person who sees someone fall overboard should（）.

A.immediately jump into the water to assist the individual

B.call for help and keep the individual in sight

C.run to the radio room to send an emergency message

D.go to the bridge for the distress flares
查看答案