[单选题] What does the term “tide” refer to?
A. Horizontal movement of the water
B. Vertical movement of the water
C. Mixing tendency of the water
D. Salinity content of the water

[单选题] What does the term TO NAVIGATE WITH CAUTION mean?
A. To navigate intentionally
B. To navigate intensely
C. To navigate carefully
D. To navigate completely

[单选题] What does OBO mean?
A. Oil Bulk Oil
B. Ore Bulk Oil
C. Only Bulk Ore
D. Only Basic Oil

[单选题] What does ECDIS stand for?
A.Electrical Chart Display and Indication System
B.Electronic Chart Display and Information System
C.Electric Chart Display and Informing System
D.Electronic Chart Display and Indicating System

[单选题] What does a Racon help with?
A.Measuring the distance
B.Measuring the relative speed
C.Identifing a vessel
D.Identifing a seamark

[单选题] What does not contribute to the commercial GPS receiver position error ________．
A.Satellite clock
B.Ship's speed
C.Atmospheric/ionospheric propagation
D.Receiver

[单选题] What does the abbreviation VHF stand for？
A. Vessel's Hoisting Flag
B. Very High Safety
C.Vessel's Homing Frequency
D. Very High Frequency

[单选题] What does a navigator who uses an ECDIS require?
A. Good navigational knowledge and a professional job attitude
B. Good computer knowledge
C. Good system knowledge
D. Nothing special

[单选题] What does the DSC control unit do if the GMDSS radio operator fails to insert updated information when initiating a DSC distress alert ________．
A.It will abort the transmission and set off an audible alarm that must be manually reset
B.It will initiate the DSC distress alert but，as no information will be transmitted，rescue personnel will not be able to identify the vessel，its position or its situation
C.It will initiate the DSC distress alert and default information will automatically be transmitted
D.It will initiate the DSC distress alert，but any station receiving it will have to establish contact with the distressed vessel to determine its identity，position and situation

[单选题]手提灭火瓶包括哪几个部分? What does a portable fire bottle make up of? ( )
A.瓶体，灭火剂 cylinder, agent
B.操作手柄 operating lever
C.A+B

[单选题]AMM手册是属于什么类型手册（ ） what type manual does AMM manual belongs to ?
A.客户化手册 customization
B.机型手册 envelope
C.通用手册 general

[单选题] A tide is called diurnal when
A. only one high and one low water occur during a lunar day
B. the high tide is higher and the low tide is lower than usual
C. the high tide and low tide are exactly six hours apart
D. two high tides occur during a lunar day

[单选题] Tide is ______ in direction ENE．
A.Getting
B.Setting
C.Being
D.Having

[单选题] ______ is not a type of tide．
A.SEMIDIURNAL
B.DIURNAL
C.MIXED
D.OSCILLATING

[单选题] A tide is called diural when ______.
A. only one high and one low water occur during a lunar day.
B. the high tide is higher and the low tide is lower than usual
C. the high tide and low tide are exactly six hours apart
D. two high tides occur during a lunar day

[单选题] Stand of the tide is that time when ______．
A.the vertical rise or fall of the tide has stopped
B.slack water occurs
C.tidal current is at a maximum
D.the actual depth of the water equals the charted depth

[单选题] As the tide makes the water ______ twice a day, a resulting current, or tidal stream is generated.
A. rising and falling
B. rose and fell
C. the rise and fall
D. rise and fall

[单选题]( )31. Time and tide _____ for no man.
A. wait
B. waited
C. is waiting
D. has waited

[单选题] As the tide makes the water_______twice a day a resulting current, or tidal stream, is generated.
A.rising and falling
B.Rose and fell
C.the rise and fall
D.rise and fall