网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
单选题
Most propellers on merchant vessels are constructed of（）.
A
managanese bronze
B
cast iron
C
mild steel
D
improved plow steel
参考答案
参考解析
解析：
暂无解析
更多 “单选题Most propellers on merchant vessels are constructed of（）.A managanese bronzeB cast ironC mild steelD improved plow steel” 相关考题
考题
The SOLAS Convention in its successive forms is generally regarded as the most important of all international treaties concerning the ______of merchant ships.A.pollutionB.economizationC.safetyD.efficiency
考题
A shipboard oil pollution emergency plan is required of ______.A.all vessels, regardless of size and commercial applicationB.any barge or other ship which is constructed or operated in such a manner that no oil in any form can be carried aboardC.an oil tanker of 150 gross tons or above, or other ship of 400 gross tons or aboveD.an oil tanker of 400 gross tons and above, or other ships of 150 gross tons and above
考题
You are in charge of a towing vessel that operates exclusively on inland waters. You regularly tow barges that provide services (cargo lighters，fuel barges，etc.) to foreign flag vessels in port. What will be accepted as proper credentials for you and your crew?A.No credentials are required since you operate on inland waters onlyB.Social Security cardC.State driver's license with photo IDD.Merchant Mariner's Document
考题
The most common type of davit found on merchant vessels today is the ______．A.RadialB.Sheath-screwC.GravityD.Quadrantal
考题
Which statement about tunnel bow thrusters fitted to large vessels is TRUE ________．A.They are effective on most vessels at speeds up to 10 knotsB.Because of their location，most modern installations have as much power as a tugC.They are fully effective at all draftsD.When going astern at slow speed，they provide effective steering control
考题
A vessel brought alongside should be fended off the towing vessel by ______.A.crew members using their armsB.crew members using the strong muscles of their legsC.fendersD.No fending is necessary due to the rugged construction of most towing vessels
考题
Aboard damaged vessels, the MOST important consideration is preserving ______.A.bilge pumping capacityB.reserve buoyancyC.level attitudeD.Instability
考题
Kort nozzles are installed around the propellers of some vessels to ______.A.increase the thrust of the propellerB.protect the propeller from striking sawyersC.protect the propeller from striking barges towed on the hipD.protect the propeller from touching bottom in low water
考题
Most propellers on merchant vessels are constructed of______．A.manganese bronzeB.cast ironC.mild steelD.improved plow steel
考题
单选题The main office building was constructed on the most ______ piece of land in town.A
desirableB
desireC
desiredD
desirably
考题
单选题（）are increasingly used as main engine on merchant vessels, because they have a high Hp/Weight ratio.A
Slow speed diesel enginesB
Medium-speed diesel enginesC
Steam enginesD
Gasoline engines
考题
单选题Fire extinguishers on inspected vessels are numbered by size I through V，with I being（）.A
used for electrical fires onlyB
the smallestC
the most accessibleD
the most effective
考题
单选题（） can be found on most medium to large merchant vessels even if the main engine is either a steam turbine or 2-stroke crosshead engine.A
The medium speed 4-stroke trunk piston engineB
The low speed 2-stroke crosshead engineC
The medium speed 2-stroke crosshead engineD
The low speed 4-stroke trunk piston engine
考题
单选题Most very large ocean going vessels，such as bulk carriers and large tankers，tend to squat（）.A
by the bowB
by the sternC
at the end nearest the bottomD
evenly fore and aft
考题
单选题A vessel brought alongside should be fended off the towing vessel by（）.A
crew members using their armsB
crew members using the strong muscles of their legsC
fendersD
No fending is necessary due to the rugged construction of most towing vessels
考题
单选题Fire detecting systems on merchant vessels may be arranged to sense （）.A
smokeB
rate of temperature riseC
ionized particlesD
all of the above
考题
单选题A shipboard oil pollution emergency plan is required of （）.A
all vessels, regardless of size and commercial applicationB
any barge or other ship which is constructed or operated in such a manner that no oil in any form can be carried aboardC
an oil tanker of 150 gross tons or above, or other ship of 400 gross tons or aboveD
an oil tanker of 400 gross tons and above, or other ships of 150 gross tons and above
考题
单选题A shipboard Oil Pollution Emergency Plan is required of（）.A
all vessels，regardless of size and commercial applicationB
any barge or ship constructed or operated in such a manner that no oil in any form can be carried aboardC
an oil tanker of 150 gross tons and above，or other ship of 400 gross tons and aboveD
an oil tanker of 400 gross tons and above，or other ships of 150 gross tons and above
考题
单选题To prevent damage by and to storage batteries aboardsmall passenger vessels they should be located（）.A
in trays constructed of material that is resistant to the electrolyteB
so as to prevent movement when the vessel pitches and rollsC
in a well ventilated areaD
All of the above
考题
单选题The reason why more and more of the large merchant vessels are being powered by medium-speed diesel engines is （）.A
they operate between 150 and 450 rpmB
they are connected to the propeller by gearingC
their smaller size and weightD
they can be connected directly to the propeller without gearing
考题
单选题Several merchant ships are arriving at the scene of a distress incident. One of the them must assume the duties of the Coordinator Surface Search (CSS). Which of the following statements is TRUE?（）.A
CSS duties are always assumed by passenger vessels，dry cargo vessels，or tankers in that order of precedenceB
The CSS must be established by mutual agreement between the ships concernedC
A tanker should never be assigned CSS duties unless only tankers are presentD
The first vessel to arrive at the distress incident is designated as the CSS
考题
单选题For vessels with （）, the meaning of the order would include the combination of pitch and revolutions as indicated in ships orders.A
fixed pitch propellersB
uncontrollable pitch propellerC
constant pitch propellersD
variable pitch propellers
考题
单选题Kort nozzles are installed around the propellers of some vessels to（）.A
Increase the thrust of the propellerB
Protect the propeller from striking sawyersC
Prevent the propeller from striking barges towed on the shipD
Prevent the propeller from touching bottom in low water
考题
单选题On tank vessels equipped with power operated cargo tank valves, the type of power operator most commonly used is （）.A
hydraulicB
electricC
steamD
diesel
考题
单选题Several merchant ships are arriving at the scene of a distress incident. One of the them must assume the duties of the Coordinator Surface Search (CSS). Which of the following statements is TRUE? （）A
CSS duties are always assumed by passenger vessels，dry cargo vessels，or tankers in that order of precedenceB
The CSS must be established by mutual agreement between the ships concernedC
A tank vessel should never be assigned CSS duties unless only tank vessels are presentD
The first vessel to arrive at the distress incident is designated as the CSS
考题
单选题Aboard damaged vessels，the MOST important consideration is preserving（）.A
bilge pumping capacityB
reserve buoyancyC
level attitudeD
instability
考题
单选题In most cases，when a large merchant vessel enters shallow water at high speed the（）.A
maneuverability will increaseB
speed will increaseC
bow will squat farther than the sternD
vessel will rise slightly，on a level plane
热门标签
最新试卷