更多"In a river subject to tidal current"的相关试题:
[单项选择]The drift and set of tidal，river，and ocean currents refer to the（）.
A. position and area of the current
B. speed and direction toward which the current flows
C. type and characteristic of the current's flow
D. None of the above
[单项选择]The best time to work a boat into a slip is（）.
A. when the wind is against you
B. with the current setting against you
C. at slack water
D. with a cross current
[单项选择]（）outlines the Admiralty method of Harmonic tidal analysis for long and short observation periods plus a volume on datums for hydrographic surveys.
A. Ocean Passages for the World
B. Admiralty Tidal Stream Atlases
C. Admiralty Manual of Tides
D. Admiralty Tidal Handbooks
[单项选择]The velocity of a rotary tidal current will be decreased when the Moon is（）.
A. at apogee
B. new
C. full
D. All of the above
[单项选择]（）offers a detailed description of tidal theory and its application to the analysis and prediction of tides and tidal streams.
A. Ocean Passages for the World
B. Admiralty Tidal Stream Atlases
C. Admiralty Manual of Tides
D. Admiralty Tidal Handbooks
[单项选择]River currents tend to（）.
A. pick up speed where the channel widens
B. run slower in the center of the channel
C. hug the inside of a bend
D. cause the greatest depth of water to be along the outside of a bend
[单项选择]As you approach Old River Control Structure Light you see a flashing amber light. You should（）.
A. navigate as close to the left descending bank as safety permits
B. navigate as close to the right descending bank as safety permits
C. turn into the inflow channel as the bypass is now open
D. slow your engine speed to not more than 5 mph
[单项选择]If your vessel were proceeding down river (descending)，a green square marker with a green reflector border on the right bank would be a（）.
A. mile board
B. dredging mark
C. passing daymark
D. crossing daymark
[单项选择]In some river mouths and estuaries the incoming high-tide wave crest overtakes the preceding low-tide trough. This results in a wall of water proceeding upstream，and is called a（）.
A. seiche
B. bore
C. boundary wave
D. surge
[单项选择]The controlling depth of the river is（）.
A. the minimum depth of the river prescribed in the channel maintenance program
B. the edge of a dredged channel
C. the highest level to which the river may rise without flooding
D. the least available water in a channel which limits the draft of boats and tows
[单项选择]A vessel crossing a river on the Western Rivers has the right of way over（）.
A. vessels ascending the river
B. vessels descending the river
C. all vessels ascending and descending the river
D. None of the above
[单项选择]You are anchoring in a river where the current is from one direction only.The best way to lay out two anchors is to have them（）.
A. Directly in line with the bow
B. Side by side，with their lines on the port and starboard side
C. So that their lines form an angle
D. On top of one another
[单项选择]A section of the river that is narrower than usual and is often navigable from bank to bank is a（）.
A. chute
B. stabilized channel
C. slough
D. navigable pass
[单项选择]英文词汇Delay time、Dead time、Decay time分别代表（）时间。
A. 寂静、延迟、下降
B. 下降、寂静、延迟
C. 延迟、下降、寂静
D. 延迟、寂静、下降
[单项选择]As you approach Shreves cut-off you see Red River LandingGage (302.4 AHP) which reads 4.2 feet. Which of thefollowing statements is TRUE? （）
A. This reading is at the same elevation as the 6.2 ft. mark on the gage at Head of Passes
B. A vessel drawing 8 ft would be able to pass over the sill at Old River Lock
C. This reading is 6.4 feet below the Low Water Reference Plane
D. A vessel drawing 7 ft. would be able to pass through the locks at Lower Old River
[单项选择]After you get underway，what is the first river gage you will pass? （）
A. Bayou Sara
B. Baton Rouge
C. Head of Passes
D. Red River Landing
[单项选择]After you enter the Ohio River at Cairo，which span of the Illinois Central RR Bridge would you select to pass under? （）
A. Any span is navigable
B. Northbank or Southbank
C. Southbank span only
D. Northbank span only
[单项选择]A vessel proceeding along the bank of a river or channel has the tendency to（）.
A. continue in line with the bank
B. hug the bank
C. sheer away from the bank
D. increase speed
