更多"A substance found in residual fuels"的相关试题:
[单项选择]The force exerted by a propeller which tends to throw the stern right or left is called（）.
A. slip
B. sidewise force
C. rotational force
D. thrust
[单项选择]The internal force of a material, which tends to resist deformation when subjected to external forces, is known as （）.
A. stress
B. strain
C. shear strength
D. ultimate tensile strength
[单项选择]Which of the following factors tends to increase scale formation on the saltwater side of a heat exchanger used in a diesel engine cooling water system?（）
A. Baffle plates that have been bent during prior removal
B. Leaks in the cooler tube nest
C. Operating the engine while maintaining a high sea water outlet temperature
D. A punctured sea water strainer supplying cooling water to the heat exchanger
[单项选择]Which protocols are found in the network layer of the OSI reference model and are responsible for path determination and traffic switching?（）
A. LAN
B. routing
C. WAN
D. network
[单项选择]Which of the listed design features is found in an exhaust valve and NOT in an intake valve?（）
A. Hard alloy steel construction
B. Beveled edges on the valve head
C. Low alloy steel construction
D. Poppet type design
[单项选择]Which information is found in the chart title（）.
A. A rhumb line appears as a straight line
B. Distance is measured at the midlatitude of the track line
C. Meridians appear as curved lines converging toward the nearer pole
D. Parallels，except the equator，appear as curved lines
[单项选择]Fuels of different qualities may require advancing or retarding the injection timing, in addition to which if the injection timing is advanced when the engine is running at loads below the （）, then a saving in fuel can be achieved.
A. BHP
B. MCR
C. IHP
D. MEP
[单项选择]When comparing different fuels for different engines, the ignition quality of diesel fuel oils becomes a less critical consideration as （）
A. the amount of lube oil additives increase
B. piston speeds increase
C. injection pressure decrease
D. engine speeds decrease
[单项选择]Fuels of high quality with their earlier ignitions will cause higher （）pressure in cylinders of a diesel engine.
A. compression
B. maximum
C. rated
D. oil
[单项选择]The cetane number rates fuels for diesel engines according to its （）
A. antiknock characteristics
B. ignition qualities
C. rates of vaporization
D. viscosity
[单项选择]Gasoline vapor tends to collect（）.
A. above the floor plates of the bilges
B. above the carburetor level
C. at the lowest point of the bilge areas
D. at no particular level
[单项选择]All of these alternatives are carbon-based fuels（）molecules are smaller and simpler than those of gasoline.
A. which
B. who
C. what
D. whose
[单项选择]Air that may enter a refrigeration plant tends to collect in the （）.
A. upper part of the receiver
B. upper part of the condenser
C. down stream end of the cooling coil
D. outlet end of the condenser
[单项选择]On the other hand, alternative fuels do have（）.
A. drawbacks
B. setback
C. drawer
D. backward
[单项选择]Sidewise force of the propeller tends to throw a vessel’s stern to the right or left，depending on rotation. This force is caused by（）.
A. back current from the rudder
B. greater pressure on the right or left side of the propeller，depending on rotation
C. lower pressure on the right or left side of the propeller，depending on rotation
D. torque from the velocity and angle at which the surrounding water impinges upon the propeller blades
[单项选择]A single-screw vessel going ahead tends to turn more rapidly to port because of propeller（）.
A. discharge current
B. suction current
C. sidewise force
D. thrust
[单项选择]Which of the following is not a factor which can interfere with the pulse of sound and cause a variation the depth reading?（）
A. salinity
B. temperature
C. the hydrostatic pressure
D. Vessel’s speed
[单项选择]Pyrometers commonly found on diesel engine exhaust systems, consist of（）
A. pyrostats and a voltmeter
B. a gas-filled bellows, a tube and a pressure gauge
C. thermocouples and a voltmeter
D. ammeters and thermocouples
[单项选择] You are working with a Windows Communication Foundation (WCF) client application that has a generated proxy named SampleServiceProxy.When the client application is executing, in line 04 of the following code, the channel faults (Line numbers are included for reference only.) 01 SampleServiceProxy proxy = new SampleServiceProxy（ ）; 02 try 03 { 04 proxy.ProcessInvoice(invoice); 05 } 06 catch 07 { 08 if(proxy.State == CommunicationState.Faulted) 09 { 10 ... 11 } 12 } 13 proxy.UpdateCustomer(customer);You need to return proxy to a state in which it can successfully execute the call in line 13.Which code segment should you use at line 10?（）
A. proxy.Close();
B. proxy = new SampleServiceProxy();
C. proxy.Abort();
D. proxy.Open();
