using a small scope ratio
replacing that portion with a short length of chain
using a hockle to keep that portion of the anchor line off the bottom
using a synthetic line
第1题：
第2题：
使冰塞可能性增加
使排气压力、温度升高
使机器运转时间延长
使机器起停频繁
第3题：
已中天
未中天
正好中天
无法判断
第4题：
工作接地
保护接地
工作接地或保护接地
屏蔽接地
第5题：
①②③
②③④
③④⑤
④⑤⑥
第6题：
The course change should be made rapidly to prevent transient induced magnetism while passing the intercardinal headings
After the new heading is reached，the vessel should steam on that course for at least two minutes before the adjustment
During the course change，you should gently tap the compass to remove any error caused by friction on the pivot bearing
After steadying on the new heading，the compass card should be slewed by a magnet and allowed to oscillate freely to remove any gaussin error
第7题：
软铁球；象限自差
佛氏铁；半圆自差
垂直磁棒；倾斜自差
横磁棒；半圆自差
第8题：
No equipment is provided
Glue and rubber patches
Several various-sized sealing clamps
Self-adhesive rubberized canvas patches
第9题：
第10题：
通知船旗国主管机关
通知代表船旗国颁发的有关证件的机构
报告国际海事组织
ABC都是