Many of the lights on this coast are placed so high as to be frequently obscured by（）.

相似题目

• By night，you sight the lights of a vessel engaged in underwater operations. If an obstruction exists on the port side of the vessel，it will be marked by（）.

  A . a floodlight B . two red lights in a vertical line C . a single red light D . any visible light

  查看最佳答案

• For this reason, many US（）contain the provision “time is of the essence” within their preamble.

  A . contacts B . contents C . contends D . contract

  查看最佳答案

• As you approach mile 659.4 AHP，you see on the right descending bank a flashing green light. This light marks（）.

  A . a lock that is open B . a sunken barge C . a dolphin，water intake and discharge D . the end of a wharf

  查看最佳答案

• A vessel towing is showing three forward white masthead lights in a vertical line. This means that the length of the（）.

  A . towing vessel is less than 50 meters B . towing vessel is greater than 50 meters C . tow is less than 200 meters D . tow is greater than 200 meter

  查看最佳答案

• The charts show two dashed lines crossing the river justsouth of St. Catherine Bar Light. What does this indicate? （）

  A . Overhead power lines B . Louisiana-Mississippi ferry crossings C . Two railroad trestles D . Two submerged oil pipeline

  查看最佳答案

• The price of commodities （）on many factors like quality， demand， supply， etc.

  查看最佳答案

• You are in charge of a power-driven vessel navigating at night.You sight the red sidelight of another vessel on your port bow.The other vessel’s aft masthead light is to the right of her forward masthead light. You should（）.

  A . stop engines B . hold course and speed C . alter course to port D . sound the danger signal

  查看最佳答案

• 请根据下列材料写一篇150词左右的英文短文。 On college campuses across the nation, there is a noticeable phenomenon that we cannot afford to ignore: far too many young college students lack the sense of gratitude. What is your opinion about this phenomenon?

  查看最佳答案

• The Light List shows a lighted aid to navigation on the left bank. This means that the light can be seen on the starboard side of a vessel（）.

  A . ascending the river B . descending the river C . crossing the river D . proceeding towards sea

  查看最佳答案

• Many dangerous cargoes are stowed on deck becaused of the（）.

  A . danger to crew and cargo B . necessity of periodic inspection C . possibile need to jettison D . All of the above

  查看最佳答案

• On a chart，the characteristic of the light on a lighthouse is shown as flashing white with a red sector.The red sector（）.

  A . Indicates the limits of the navigable channel B . Indicates a danger area C . Is used to identify the characteristics of the light D . Serves no significant purpose

  查看最佳答案

• While loading cargo，a white trimming light on the starboard side comes on. This indicates that（）.

  A . the vessel has a list of about 1` to starboard B . the chutes should be directed to the starboard side C . the chutes in No. 1 hold should be directed to the starboard side D . a severe list to starboard has developed and all loading should cease

  查看最佳答案

• The light rhythm of Morse (A) is shown on（）.

  A . preferred-channel buoys B . starboard- or port-side buoys C . special marks D . safe water buoy

  查看最佳答案

• On the pole side of the trade wind belt，there is an area of high pressure with weak pressure gradients and light，variable winds. This area is called the（）.

  A . prevailing westerlies B . geostrophic winds C . doldrums D . horse latitude

  查看最佳答案

• A light，feathery deposit of ice caused by the sublimation of water vapor directly into the crystalline form，on objects whose temperatures are below freezing，is called（）.

  A . dew B . frost C . glaze D . snow

  查看最佳答案

• You are on a vessel that cannot comply with the spacing requirement for masthead lights.What is required in this situation（）.

  A . The vessel must carry only the lights that comply with the rules; the others may be omitted B . The vessel's lights must comply as closely as possible，as determined by her government C . The vessel must be altered to permit full compliance with the rules D . An all-round light should be substituted for the after masthead light and the stern light

  查看最佳答案

• Many scientists remain ________ about the value of this research program.

  查看最佳答案

• 139. Many of the lights on this coast are placed so high as to be frequently obscured by _____

  查看最佳答案

• We’ve all heard of Thomas Edison, __________ who invented the electric light and many

  A．A.man B．B.the man C．C.a man D．D.the men

  查看最佳答案

• The photoperiodic response of algae actually depends on the duration of darkness, but not on the response of light.

  A．is not on light B．but is not on the light C．and not on light D．the light is not on

  查看最佳答案

• Five people are involved on a project that requires significant communication between all project participants. How many lines of communication exist on this project？

  A 5 B 6 C 8 D 10 E 9

  查看最佳答案

• On the surface, many marriages seem to break up because of a “third party.” This is, however, a psychological illusion. The other woman or the other man merely serves as a pretext for dissolving a marriage that had already lost its essential integrity.

  从表面上看，许多婚姻似乎是因为有了“第三者”才破裂的。然而这只是一种心理幻觉。那个女人，或者那个男人，实际上掩盖了一个已经失却真正意义的婚姻的解体。

  查看最佳答案

• The relation of the earth on its axis is responsible for the_____of periods of light and darkness.

  A．alteration B．alternation C．alternative D．altercation

  查看最佳答案

• Too many natural materials _____ since the beginning of this century.

  A、had been made use of B、were used C、have ben used of D、have been made use of

  查看最佳答案