Before the oily water is installed on board ships, it must have （）

相似题目

• In an oily water separator the oil will travel （） to the oil collecting spaces.

  A . upwards B . downwards C . outwards D . forward

  查看最佳答案

• The pump used to send the bilge water into the oily water separator（）the mixture because this might create finer oil particles.

  A . should agitate B . should not agitate C . should mix up D . should not add u

  查看最佳答案

• What’s the advantage of oily water separator that meets the requirement of MEPC 60(33) over MEPC 107(49)?（）

  A . more economic B . larger capacity on oil treatment C . less costive D . more capable of separating emulsified oil

  查看最佳答案

• According to Annex I of MARPOL 73/78, oily waste from cargo tanks of oil tankers can be discharged when the ship is more than（）away from the nearest land.

  A . 50 nautical miles B . 30 nautical miles C . 15 nautical miles D . 12 nautical mile

  查看最佳答案

• The pressure difference of the gauge on the oily water separator increases greatly, the reason is（）

  A . the filter is clogged B . bilge suction value is clogged C . suction value and discharge value of the pump do not open fully D . screw pump is worn seriously and volumetric efficiency is decreased

  查看最佳答案

• The bosun has thrown the liferaft into the water before abandoning the vessel. The operating cord（）.

  A . serves as a sea painter B . detaches from the liferaft automatically C . is used to rig the boarding ladder D . is cut immediately as it is of no further use

  查看最佳答案

• The principle of separation by which all commercially available oily water separators function is （） differential between oil and water.

  A . the temperature B . the viscosity C . the gravity D . the size

  查看最佳答案

• The （）is fitted on an oily water separator.

  A、sliding bowl bottom B、gravity disc C、bowl D、liquid level detector

  查看最佳答案

• The resistance to the movement of the globule in oily water mixture depends on its size and the （） of the fluid.

  A . pressure B . velocity C . gravity D . viscosity

  查看最佳答案

• Which of the following pumps will most affect oily water separator performance and give the worst result?（）

  A、Reciprocating pump B、Vane pump C、Screw pump D、Centrifugal pump

  查看最佳答案

• I hereby（）you，on behalf of the Loocki Grain Co.，Lisbon，to pay to the Harbor Master of the Santa Marta，Columbia，the sum of 500，000 Peso which represents a fine levied on the above-named vessel for polluting the coastal waters with oily water.

  A . permit B . entitle C . authorize D . give the right to

  查看最佳答案

• Which of the following pumps is most suitable for an oily water separator?（）

  A . reciprocating pump B . vane pump C . mono pump D . axial-flow pum

  查看最佳答案

• Oily water separator mis-alarms, the most possible reason is （）

  A . separating oil too fast B . the sensor flushed badly C . the discharge solenoid value out of order D . too low heating temperature

  查看最佳答案

• About half an hour before the engine is required, cooling water at （） must be circulated.

  A . more than the working temperature B . less than the working temperature C . the working temperature D . the same as the surrounding temperature

  查看最佳答案

• Before the oily water separator put into operation, it should be （）

  A . filled with bilge water B . filled with oil C . filled with clean water D . be emptied

  查看最佳答案

• When oily water separator is operating, which measure （） is wrong.

  A . pay attention to operating parameters B . renew and clean separating units in time C . check oil level in separator to prevent overload D . check separating effect, if it is bad, flush with large capacity water pum

  查看最佳答案

• Which of the following liquids can ordinarily be discharged overboard without being processed through an oily water separator?（）

  A . Cargo tank ballast B . Segregated ballast C . Engine room bilges D . Cargo pump room bilge

  查看最佳答案

• Which of the following is wrong about operation of oily water separator?（）

  A、To filled with clean water before operation. B、To keep air cushion in oil collecting space during running. C、To check oil level during running. D、To clean inner separator with low pressure steam.

  查看最佳答案

• To assist separation of low viscosity oils steam coils or electric heaters are fitted （） of the oily water separator.

  A . in entrance B . in exit C . in the upper part D . on the outside

  查看最佳答案

• I just managed to（）a quick breath before I was pulled under the water by the passing boats.

  A . load B . gain C . take D . escape

  查看最佳答案

• Think before you ___ the tap ___. Do you really need the water?

  查看最佳答案

• Is this beautiful?A)Yes, rarely have I seen this before. B. Yes, I need a rest.C)No, tomorrow will be fine. D. No, the work should be done by him.

  查看最佳答案

• The glass of water is too hot, I prefer some cold water _____ .

  查看最佳答案

• 听力原文：W: I love the beach when the sand is fine and the water is just barely making waves.

  M: I prefer an angry sea. That makes me feel better whenever I'm sad. Q: What does the man like？ (17) A．A stormy ocean. B．Calm water. C．Golden sand. D．Little waves.

  查看最佳答案