【正文】 56. What does VIT stand for?Variable injection timing57. What’s the type of the freshwater generator? Multistage flash water generator ( flash evaporator and boiling evaporator)58. What’s the type of the fuel oil separator?Centrifugal.59. What’s the function of the fuel oil separator?Remove water and impurities.60. What’s the type of the oily water separator? Gravity filtration and absorption. 61. What’s the function of the oily water separator?It ensures that the oil content in the water to be discharged into the sea doesn’t exceed the required limit.62. What’s the function of the incinerator?It is to Burn the oil sludge and solid wastes.63. What is the oil content limit when pumping out the bilge?Not more than 15 ppm.64. What is the hot work?It includes gas welding, gas cutting and electric welding.65. Why do you often carry out the water treatment for the boiler?We do it to prevent corrosion and scale inside the boiler. .66. What boiler is used on a motor ship at sea?An exhaust gas boiler is used when the ship is at sea.67. What boiler is used on a motor ship in port?A donkey boiler is used when the ship is in port.68. How do you decide to overhaul the main engine generally? According to specific working condition and requirement of instruction book.69. What is the function of the soot blower?The sootblower is to blow away soot and the products bustion from the tube surface.70. How do you grind the valve plate of air pressor?Grind it in the path of “8” shape.71. What is used to connect a diesel engine and a generator?It is the coupling. 72. What type is the most mon marine refrigeration?The pression refrigeration is the most monly used type. 73. Please introduce four ponents required for a pression refrigeration system.They are the pressor, condenser, expansion valve and evaporator.74. How do you fill Freon 22 into the refrigeration system?(The outlet of refrigerant steel bottle slops downwards, and keeping the cooling water circulating, then start the air pressor )75. Why does the refrigerating pressor start and stop frequently?Because of lack of refrigerant, dirty or iced evaporator, leaky liquid line solenoid valve or other reasons.76. What equipment is used to handle the anchors?The windlass is used to handle the anchors.77. Please name at least three items of deck machinery.They are mooring winches, cranes, windlass and so on.78. How do you drain off air of the injection pump? Byusing vent screw.79. How do you clean the disc of an oil separator?With disc cleaner.80. What should be prepared before disassembly of cylinder for main engine/auxiliary engine? Special tools, draining off the residual oil and water81. How do you manage sewage? Drop in sterilized medicine regularly, and keep the blower in constant working.. 第三章 駕機聯(lián)系口述1. Communications with officers.In order to ensure the safe navigation of the ship, frequent munication between the engineers and officers is necessary. The usual means of munication is by telephone and telegraph. If the munication between the engine room and the bridge fails, the ship will be endangered. The records of munication should be maintained which will provide evidence in the event of an accident at sea. Noon report is also a good means of munication between the engine room and the bridge. Duty officer and duty engineer should exchange information about the time of standby engine, testing steering gear, checking up clock and telegraph during navigation.2. Noon report.Noon report is a good means of munication between the engine room and the bridge. Formally, it should be presented by the captain to the chief engineer or vice versa. But in practice, it is often prepared by the second officer or the third engineer. When the ship is at sea, the noon report should be exchanged daily. While the ship is in port, it will be presented once several days. The noon report from the engine room to the bridge mainly includes the average speed of the main engine, the storage of the water, fuel oil, lube oil and so on. While the noon report from the bridge to the engine room mainly includes the ship’s position in term of longitude and latitude at noon, the average navigation speed and so on.3. Take over watch.Taking over the watch is a very important procedure in watch keeping. The relieving engineer should arrive at the engine room fifteen minutes early. He should check the operation and condition of the steering gear, the main engine, the auxiliary engines, boilers and other important equipments and systems. He should also check the storage of daily service oils and water. If there is any problem, such as equipment failure, the relieving engineer should be told what has been done, any unfinished work, information from the bridge and so on.4. Hand over watch.At the pletion of the watch, each member of watchkeeping should hand over to his relief, ensuring that the relief is petent to take over and carry out his duties effectively. Before going off duty, the engineer in charge of the watch shall ensure that all events related to the main and auxiliary machinery are suitalby recorded. He should tell the relieving engineer the standing orders , special instructions and unfinished work, if any. If he has any reason to believe that the relieving engineer is not capable of carrying out the watchkeeping duties effectively, he shall not hand over the watch and the chief engineer shall be notified.5. Stand by engine before departure.When stand by engine before departure, the following items should be checked. 1) All necessary supply pumps running and warmingup system, standby pumps selected in auto start mode. 2) Correct temperatures and pressures.3) Minimum of two diesel generators running parallel, standby generator in auto start mode.4) Test the steer