The most common type of davit found on merchant vessels today is the ______．
A.Radial
B.Sheath-screw
C.Gravity
D.Quadrantal
第1题：
today free education provided by the irish government covers all public universities，as is common in most of the countries of europe. ()
第2题：
The type of installation“(71)”is selected by most users, the software installed with the most common options.
A．Typical
B．Complete
C．Custom
D．Minimum
第3题：
The type of installation “________” is selected by most users, the sof1be installed with the most common options.
A.Typical
B.Complete
C.Custom
D.Minimum
第4题：
Which statement about tunnel bow thrusters fitted to large vessels is TRUE ________．
A.They are effective on most vessels at speeds up to 10 knots
B.Because of their location，most modern installations have as much power as a tug
C.They are fully effective at all drafts
D.When going astern at slow speed，they provide effective steering control
第5题：
There is a ______ when one or more vessels are towing or pushing another vessel or vessels，provided that they are all involved in commercial activities and not in a salvage operation．
A.private safety
B.private maritime adventure
C.common safety
D.common maritime adventure
第6题：
The SOLAS Convention in its successive forms is generally regarded as the most important of all international treaties concerning the ______of merchant ships.
A.pollution
B.economization
C.safety
D.efficiency
第7题：
The most common type of containment device for spilled oil on the water is the use of _____.
A.straw
B.booms
C.skimmers
D.chemical dispersants
第8题：
A.are the most three common means
B.are the most common three means
C.are the three most common means
D.are three the most common means
第9题：
Which davit type may be operated by one man ________．
A.Quadrantal
B.Gravity
C.Sheath-screw
D.Radial
第10题：
Which type of davit is not considered to be a mechanical davit ________．
A.Sheath-screw boom
B.Radial
C.Crescent
D.Quadrantal