单选题The ARPA may swap targets when automatically tracking if two targets()Aare tracked on reciprocal bearingsBare tracked at the same rangeCare tracked on the same bearingDpass closely to each other
单选题
The ARPA may swap targets when automatically tracking if two targets()
A
are tracked on reciprocal bearings
B
are tracked at the same range
C
are tracked on the same bearing
D
pass closely to each other
参考解析
解析:
暂无解析
相关考题:
单选题If the back clearance of a piston ring is excessive,()Acompression pressure in the cylinder will be higherBcarbon will accumulate behind the ringCcombustion gases will penetrate beneath the ring landDpiston side thrust will be increased
单选题根据东京备忘录,实施PSC检查时选择的重点对象是() ①客船、滚装船和散货船; ②油船、气体运输船、化学品船和装运包装形式有害物质的船舶; ③列入备忘录年度报告中的“超过平均延误和滞留连续3年平均表”中的船舶; ④6个月内未经任何当局检查的船舶。A①~④B②~④C①~③D①②④
单选题If the detergent type lubricating oil being used in a diesel engine is black, the oil ()Amust be centrifugedBmust by filteredCmust be changedDis holding finely dispersed carbon in suspension
单选题Oil Pollution Regulations require any transfer or discharge of oil or oily mixtures to be recorded in the ()Abridge logBMaster’s logCengine room logDoil record book
单选题If a crewman suffers a second-degree burn on the arm,you should().Adrain any blistersBapply antiseptic ointmentCscrub the arm thoroughly to prevent infectionDimmerse the arm in cold water
单选题Deep-draught vessels and VLCCs shall allow for()of at least 3.5 m at all times during the entire passage through the Straits of Malacca and Singapore.Aa draftBa freeboardCan air draftDan under-keel clearance
单选题下列有关船舶旋回要素的叙述哪项是错误的()?A在船舶旋回资料中给出的进距是航向改变90°时的进距B在船舶旋回资料中给出的横距是航向改变90°时的横距C船速越快,反移量越大D船舶初稳性高度越大,定常外倾角越大
单选题The starting air bottle should be pumped up to maximum pressure by the () before start of the engine.Aair compressorBrefrigeration compressorCvacuum pumpDpurifier
单选题The directive force of a gyrocompass().Aincreases with latitude,being maximum at the geographic polesBdecreases with latitude,being maximum at the geographic equatorCis greatest when a vessel is near the Earth's magnetic equatorDremains the same at all latitudes
单选题What is the function of wearing rings found on some centrifugal pumps? ()AAbsorb erosion of high velocity discharge streamBSeal pump shaft against entry of airCIsolate the outlet side from the inlet sideDDampen the turbulent discharge flow
单选题油料光谱分析只对()μm以下的磨粒敏感。A40B30C20D10