更多"（） are formed by abrasive particles"的相关试题:
[单项选择]Metal particles accumulated from the wearing of components in a diesel engine can result from lube oil that has been contaminated with（）.
A. abrasive particles
B. metallic oxides
C. corrosive acids
D. any or all of the above
[单项选择]Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?（）
A. Sub-cooled liquid
B. Sub-cooled vapor
C. Superheated vapor
D. Liquid
[单项选择]The starting air entering the cylinder begins when the piston（）
A. has nearly come to the TDC
B. has just past the TDC
C. has nearly come to the BDC
D. has just past the BDC
[单项选择]The heated feedwater entering any flash chamber of a flash-type evaporator will（）
A. vaporize, with the unflashed water remaining at the temperature at which it entered the flash chamber
B. vaporize, with the unflashed water equalizing to the saturation conditions existing in the flash chamber
C. vaporize, with the remaining water at the temperature greater than it entered the flash chamber
D. boil, allowing steam bubbles to rise through the brine at the bottom of the flash chamber
[单项选择]Which will most likely occur when entering shallow water? （）
A. Rudder action will become more effective
B. The vessel's list will change
C. The vessel's trim will change
D. An increase in speed will occur
[单项选择]Henry and Tom（）to the particles at the Trade Union every Saturday.
A. used to go
B. were used to go
C. are used to go
D. ues to go
[单项选择]If you wear extra clothing when entering the water after abandoning ship it will（）.
A. weigh you down
B. preserve body heat
C. reduce your body heat
D. make it more difficult to breathe
[单项选择]On entering from seaward，a starboard side daymark will（）.
A. show a fixed red light if lighted
B. show a Morse (A) white light
C. be square in shape
D. have an even number if numbered
[单项选择]Entering from seaward，triangular-shaped daymarks are used to mark（）.
A. the starboard side of the channel
B. the centerline of the channel
C. an obstruction where the preferred channel is to starboard
D. special purpose areas
[单项选择]Air entering an air-cooled refrigeration system is indicated by （）.
A. frosting of the liquid line
B. higher than normal head pressure
C. a clear sight glass
D. abnormally cold reefer boxes
[单项选择]You are entering port and have been instructed to anchor，as your berth is not yet available.You are on a SW’ly heading，preparing to drop anchor，when you observe the range lights as shown on your starboard beam.You should（）.
A. not drop the anchor until the lights are in line
B. ensure your ship will NOT block the channel or obstruct the range while at anchor
C. drop the anchor immediately as the range lights mark an area free of obstructions
D. drop the anchor immediately as a change in the position of the range lights will be an indication of dragging anchor
[单项选择]You are standing the wheelwatch on entering port and the Master gives you a rudder command which conflicts with a rudder command from the Pilot.What should you do（）.
A. obey the Master
B. obey the Pilot
C. bring the rudder to a position midway between the two conflicting orders
D. ask the Pilot if he relinquishes control
[单项选择]Cumulonimbus clouds are formed by（）.
A. vertical air movements
B. heavy rainstorms
C. horizontal air movements
D. any movement of moist air
[多项选择]What are two results of entering the Switch(config)# vtp mode client command on a Catalyst switch?（）
A. The switch will ignore VTP summary advertisements.
B. The switch will forward VTP summary advertisements.
C. The switch will process VTP summary advertisements.
D. The switch will originate VTP summary advertisements.
E. The switch will create, modify and delete VLANs for the entire VTP domain.
