更多"River currents tend to（）."的相关试题:
[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]In a river subject to tidal currents，the best time to dock a ship without the assistance of tugs is（）.
A. at high water
B. when there is a following current
C. at slack water
D. at flood
[单项选择]The currents are（）mosoonal origin．
A. from
B. on
C. in
D. of
[填空题]The most important river is the River of （）
[单项选择]Where would you obtain data on currents for areas of the world not covered by the National Ocean Service（）.
A. In the Coast Pilot
B. In the Nautical Almanac
C. In the List of Lights
D. In the Sailing Directions
[单项选择]Ocean currents are well defined and（）.
A. create large waves in the direction of the current
B. change direction 360°during a 24 hour period
C. remain fairly constant in direction and velocity throughout the year
D. are characterized by a light green color
[单项选择]Currents are（）in rate and direction.
A. vary
B. variable
C. variably
D. variability
[单项选择]A condition where two currents meet at the downstream end of a middle bar can be determined by a（）.
A. small whirlpool
B. smooth patch of water
C. V-shaped ripple with the point of the V pointing downstream
D. V-shaped ripple with the point of the V pointing upstream
[单项选择]One of the causes of ocean currents is density differences in the water. This is true because （）.
A. in an area of high density the water's surface is lower than in an area of low density
B. surface water flows from an area of high density to one of low density
C. the lesser the density gradient the freer the water is to move
D. it is the density differences that cause the currents to stay in the troughs
[单项选择]Gasoling fumes tend to（）.
A. settle near the bottom of the blige
B. settle near the top of the bilge
C. settle evenly throughout all levels of the bilge by mixing with air
D. disperse to atmosphere
[单项选择]Gasoline fumes tend to（）.
A. settle near the bottom of the bilge
B. settle near the top of the bilge
C. settle evenly throughout all levels of the bilge by mixing with air
D. disperse to atmosphere
[单项选择]Cyclones tend to move（）.
A. perpendicular to the isobars in their warm sectors
B. parallel to the isobars in their warm sectors
C. parallel to the line of the cold front
D. perpendicular to the line of the cold front
[单项选择]A refrigeration unit will tend to short cycle when operating （）.
A. under heavy loads
B. during hot gas defrost
C. under light loads
D. during starting conditions
[单项选择]Auditors tend to let directors get away with murder, for if they protest at creative accounting the firm is promptly have them sacked in favor of substitutes that will not jib at economy with the facts.（）
A. 审计员们一般都会让董事们过关，因为如果抗议公司篡改数据，他们马上就会被那些不会对实际经济状况说三道四的人替代。
B. 审计人员往往会让那些董事为所欲为，这是因为如果他们对公司伪造的账目表示抗议，公司立即就会让他们滚蛋，而让那些不会对实际经济状况挑刺的人来取代他们。
C. 审计师倾向于让那些有问题的董事逍遥法外，假如他们对有违规操作的会计操作稍有微词，企业行会立即抄他们的鱿鱼，取而代之的是那些对经济实况认可的人。
D. 稽查人员有时会出于疏忽而让那些管理人员即使犯错也不受惩罚，因为他们只要对公司的创造性账目的检查提出不满，公司就会将他们赶走，而请其他默认公司经济实况者来干。
[单项选择]When crossing a front,isobars tend to（）.
A. change from smooth curves within the air mass to sharp bends at the front
B. change from sharp bends within the air mass to smooth curves at the front
C. pass smoothly across the front with no change
D. become closer together at the front and pass through in straight lines
[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
