4. 题干： 互见中，一艘机动船甲与一艘显示一菱形体号型的船舶乙航向交叉相互驶近致有构成碰撞危险，应遵守：

A spring line leads _______．

A vessel moored with two anchors，sometimes，at an exposed roadstead to _____.

Which one of the following anchor orders is uncommon term for using？

A helmsman receives the command “Right 15 degrees rudder”. The helmsman＇s IMMEDIATE reply should be ________.

We _____ at anchor in the roadstead till the evening.

PORT A BIT SLUGGISH means that port rudder ______.

A spring line is ______.

If the pilot gives the order“How answer？” You may report “________”．

It is sometimes necessary to moor bow and stern to two mooring buoys in order to _______．

Avast means _______.