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【多选题】
对下列关于配置命令:[H3C] ntp-service refclock-master 127.127.1.1 6的理解,哪些是正确的A.
该命令可以在所有H3C ?系列交换机上配置成功
B.
该命令是将本地时钟配置为系统的参考时钟
C.
成功配置此命令的设备，其用层数表示的时钟精度为6
D.
成功配置此命令的设备，可以作为时钟服务器对外提供时钟同步服务了
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举一反三
【单选题】The Master of any vessel bound on a voyage must apply to a district court when an allegation of unseaworthiness has been made to the Master by ______．
A.
Any member of the crew of the vessel
B.
Any two officers of the vessel and a majority of the crew
C.
The First and Second Officers of the vessel or a majority of the crew
D.
The First Officer of the vessel
【单选题】When must the Master or person in charge of a ship log the position of load line marks in relation to the surface of the water in the logbook?
A.
Once a day
B.
At the change of every watch
C.
Only when in fresh or brackish water
D.
Prior to getting underway
【单选题】Orders of the Master to the officer of the watch which is he must comply with are ______.
A.
Night orders
B.
Standing orders
C.
Commands by master
D.
Requirements by master
【简答题】The applicants must be a degree holder.
【单选题】When must the Master of a vessel log the position of load line marks in relation to the surface of the water in the Official Logbook?
A.
Once a day
B.
At the change of every watch
C.
Only when in fresh or brackish water
D.
Prior to getting underway
【单选题】Which installed equipment must be tested and logged when a new Master assumes command ().
A.
Internal communications，including sound-powered telephones
B.
Navigational lights and search lights
C.
Vessel control alarms
D.
All of the above must be tested
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