[单选题]Pump up the starting air reservoir to their maximum pressure and ____ the air reservoirs and air system A . open B .close C .drain D .vent
[单选题]The hydraulic system of a deck winch has been drained, flushed, and refilled with hydraulic fluiD. An erratic knocking noise from the hydraulic motor when the winch is started would indicate_____.
[单选题]The correct tightening is obtained by the use of ____ to measure the extension given to the bolts
[单选题]In maritime Labor convention, hours of rest may be divide into no more than periods，one of which shall be at least six hour in length, and the interval between consecutive period of rest shall not exceed ____hours A???12 B??10 C???18 D???14
[单选题]Team member share accurate understanding of current and predicted engine--room and associated system state, and of ___.
[单选题]Enhanced procedures concerning the exercise of ______have been developed to allow intervention in the case of deficiencies as deemed to pose a danger to persons , property or the environment
[单选题]Which of the following operation will have a direct impact on the rate of wear in a cylinder liner?
[单选题]During oil transfer operations, who would be responsible to guarantee that the posted procedures are being followed?
[单选题]When the interface between oil and water reaches ____ the oil outlet valve____，and the water outlet valve _____.Then the oil is discharged automatically.
[单选题]As the inlet ports are opened by the downward moving piston, the scavenging air enters and displaces the remaining exhaust gas in preparation for ________.
[单选题]Which of the following is operated from the main engines room console on an automated vessel? A .fire pump and lube oil pump B .lube oil pump and distilling plant C .distilling plant and shaft and alley door D .shaft alley door and fixed CO2 release
[单选题]Before starting the motor of a separator , you should do the following thing except that____ A??release the brake B??check if the operating liquid tank is full C??supply liquid to form the liquid seal D??check the gear oil level
[单选题]Among the basic categories of equipment, which of the following are used to convert mechanical into hydraulic energy?
[单选题]if fuel oil were being discharged from the waste water outlet of a fuel oil disk type centrifuge, operated as separator, you should ____
[单选题]Before pumping up the crankcase oil, ______ should be worked by hand to minimize corrosive action on the liners.
[单选题]In order to reduce the chance of detentions ships should routinely verify the following except for_____
[单选题]The double bottom of the ship for strength and provides storage for ______ 1.fuel 2. Lubricating oil 3. water
[单选题]Which of the listed items should be secured before performing any maintenance on a solenoid operated air start valve?
[单选题]A State may also enact its domestic laws on foreign ships entering its waters. The United States, for example, has enacted the .
[单选题]The oil used 1nh.electronic governor ?actuator must be ?maintained at the correct value and that only the ____ grade of oil is used
[单选题]A large change in ambient temperature, or using an oil of viscosity different than the one recommended by the manufacturer in a mechanical hydraulic governor, will result in the need to adjust the _____
[单选题]Mechanical lubricators for diesel engine cylinders are usually small reciprocating pumps which are_____
[单选题]Hydraulic machinery failures are commonly caused by contamination of the hydraulic fluid and_______
[单选题]What should be done if localized scoring察痕. is discovered in a pump shaft sleeve during routine maintenance inspection?
[单选题]The_____ is the usual anchor handling device where one machine may be used to handle both anchors.
[单选题]The figure that the volume of air at B.D.C is divided by the volume of air at T.D.C. is termed as_____.
[单选题]During the PSC inspection, under the provisions of SOLAS 74, which one may not be regarded as clear grounds for ship’s detainment?
[单选题]The frequency of the alternating current generated by a synchronous generator is governed by the speed and the ____ A .full excitation B .power factor C .load D .number of poles
[单选题]_____ is used by the controller to adjust the fuel racks to return the engine speed to requires.
[单选题]To guarantee that a reduction gear bearing is receiving proper oil supply, you should check the _______.
[单选题]The rate of fuel injection in a diesel engine cylinder depend primarily on ____ A .the size of the holes in the fuel nozzle B .timing of the pump C .supply pressure to the lube oil D .shape of the are excessively worn
[单选题]If you detect oil in the water around your vessel while discharging fuel, the FIRST thing to do is _______
[单选题]STCW78/95 Convention describes that ____ are laid down for the certification of engineer officers in charge of a watch in a traditionally manned engine room, or the designated engineer in a periodically unmanned engine room.
[单选题]_______ must not be racked out to the isolated position whilst on load, as this action constitutes a serious fire hazard.
[单选题]In order to reduce the chance of detentions ships should routinely verify the following except for ___.
[单选题]___Convention was the first to establish basic requirements on training, certification and watch keeping for seafarers on an international level.
[单选题]Team member share accurate understanding of current and predicted engine--room and associated system state ,and of ___.
[单选题]The Pollution Prevention Regulations require that all oil spills in United States water be reported immediately to the ____.
[单选题]To achieve the best possible separator, the interface must be located between the ____of the top disc and the disc stack A .outskirt B .out brim C .outer edge D .inner part
[单选题]An operational amplifier, as used in today's consoles, has a calculated gain of 5、 This means that when the input changes_____.
[单选题]This temperature is an indication of the amount of fuel burnt in the cylinder concerned and, in general, temperatures of all the cylinders should be _________with each other.
[单选题]The control mode in which the final control element is moved from one of two fixed positions to the other is known as _____
[单选题]___are used to reduce the sparking which occurs as the current collecting brushes move across the insulated segments