[单选题]When a crankshaft has to be handled outside the engine, it should be carefully support in a manner which will avoid ___high bending moments on it.
[单选题]One method of constructing large marine diesel engines and reducing the total engine frame weight is through ( )
[单选题]The records of ship security training, drills and exercises shall be kept in the working language or languages of the ship. If the language or languages used are not ____, a translation into one of these languages shall be included.
[单选题]______ are provided for registering the temperature of the exhaust gas at the outlet from each cylinder.
[单选题]To receive oil residues from the purification of fuel and lubricating oils in the machinery spaces, what kind of tank(s) should be provided on board?
[单选题]According to Maritime Labour Convention, 2006, The minimum age at the time of the initial entry into force of this Convention is 16 years. Night work of seafarers under the age of _______ shall be prohibited.
[单选题]During port state control inspection, the detention report should be made in accordance with the format in appendix 5 of ____ Resolution A 787(19)
[单选题]____ cylinders in a two-stroke engine will be configured to ensure that the engine can be started with the crankshaft at whatever position.
[单选题]As with the refrigeration system faults and the treatments, which of the following is not true?
[单选题]It is often necessary to put an engine into ____ service with one or more cylinders cut out,or with a turbocharger secured.
[问答题]This type of extinguisher contains a charge of sodium bicarbonate powder. The container of this type extinguisher holds a steel capsule containing liquid carbon dioxide. On breaking the capsule, by depressing the knob, the gas forces all the powder out of the discharge nozzle. The powder blankets the fire in a cloud of dust, cutting off the supply of oxygen. If the fire is hot enough the sodium bicarbonate will decompose to form sodium carbonate, carbon dioxide and water all of which will aid the smothering operation and give some cooling effect. The extinguisher discharges in only 15 sec and it is thus important to aim the appliance accurately. The operating pressure of this container is higher than that of the soda-acid type. It is consequently hydraulically tested at a pressure of 35 bar.