关于多层民用建筑疏散楼梯的设计， ( )是错误的。

A．公共建筑的疏散梯段之间的水平净距不宜小于150mm
B．楼梯间内宜有天然采光
C．室外疏散楼梯净宽不小于70cm
D．疏散走道和楼梯的最小宽度不应小于1.1m

Each commercial fishing vessel must have at least one immersion suit，exposure suit，or life preserver for each（）.

A.person aboard

B.person working on deck

C.crew member

D.None of the above are correct