单项选择题
A.one B.two C.three D.four
As you hold a piece of manila line vertically in front ...
单项选择题As you hold a piece of manila line vertically in front of you，the strands run from the lower left to the upper right.Which type of line is this（）.
A.Right-hand laid B.Cable-laid C.Sennet-laid D.Water-laid
An intermediate spring is（）.A.Fitted in each leg of the...
单项选择题An intermediate spring is（）.
A.Fitted in each leg of the towing bridle B.Generally located between the “fishplate” and the main towing hawser C.Secured at the “H” bitts D.Usually made of manila hawser
A spanner is a（）.A.cross connection line between two ma...
单项选择题A spanner is a（）.
A.cross connection line between two main fire lines B.special wrench for the couplings in a fire hose line C.tackle rigged to support a fire hose D.none of the above
