×
单选题
21. The officer in charge of the navigational watch shall notify the master immediately in the following conditions EXCEPT ().
A
if restricted visibility is encountered
B
if rain or snow are encountered
C
if difficulty is experienced in maintaining course
D
if the radio equipment malfunctions
答案解析
正确答案：B
解析：
解析: 负责航行值班的高级船员应立即通知船长,除了: 遇到雨雪。
