更多"Clearance gauges at bridges indicat"的相关试题:
[单项选择]Insufficient end clearance on newly fitted piston rings in a diesel enginewill cause the rings to（）
A. jam in the most worn part of the cylinder when the rings expand
B. break in the most worn part of the cylinder when the rings expand
C. wear eccentrically on the side opposite the end gap
D. overheat and jam at the top center on the combustion stroke
[多项选择]Which of the following are true regarding bridges and switches?（）
A. Bridges are faster than switches because they have fewer ports.
B. A switch is a multiport bridge.
C. Bridges and switches learn MAC addresses by examining the source MAC address of each frame received.
D. A bridge will forward a broadcast but a switch will not.
E. Bridges and switches increase the size of a collision domain.
[单项选择]Clearances of bridges and overhead cables below Bonneville Dam refer to heights in feet above mean （）.
A. lower low water
B. high water
C. low water
D. sea level
[单项选择]Bilge soundings indicate（）.
A. the amount of condensation in the hold
B. whether the cargo is leaking or not
C. whether the vessel is taking on water
D. All of the above
[单项选择]Icreasing the exhaust valve tappet clearance of a diesel engine will result in the exhaust valve opening （）
A. later and closing earlier
B. later and closing later
C. earlier and closing earlier
D. earlier and closing later
[单项选择]Increasing the valve clearance between a valve stem and rocker arm, will result in the valve （）
A. closing later
B. opening sooner
C. staying open for a shorter period of time
D. staying open for a longer period of time
[单项选择]The clearance volume for a single stage compressor is defined as the space created between the （）.
A. top of the piston and bottom side of head, with the piston at BDC
B. piston and head, including the space around the piston to the top of the upper ring and under the valves, with the piston at TDC
C. bottom of the piston and bottom side of the head at TDC, regardless of upper ring location and valve placement
D. top of the piston and bottom side of the head at TDC as compared to that which exists between the top of the piston and bottom side of head at BDC
[单项选择]Clearance volume scavenging in a turbocharged, four-stroke/cycle diesel engine is accomplished （）.
A. during the valve overlap period
B. with only the exhaust valve open
C. at a pressure below atmospheric
D. without cooling the cylinders or pistons
[单项选择]A vessel engaged in mine clearance operations is called（）.
A. a vessel restricted in her ability to maneuver
B. a vessel not under command
C. a vessel constrained by her draught
D. a vessel not under way
[单项选择]If clearance between a piston and the cylinder wall is excessive, piston slap will occurThe slap itself is caused by （）
A. alternation of side thrust
B. a breakdown of the lube oil film on the cylinder wall
C. worn piston boss piston pin bearings
D. fluctuating gas pressure in the combustion space
[单项选择]To determine the main bearing clearance of a propulsion diesel engine, you should measure the main bearing shell using a ball anvil outside micrometer and measure the crankshaft journal using a/an （）
A. telescoping
B. ring ‘snap’ gauge
C. inside vernier caliper
D. outside micrometer
[单项选择]Reducing the clearance between a valve stem and rocker arm will result in the valve （）
A. having a shorter duration of opening
B. having a longer duration of opening
C. closing sooner
D. opening later
[单项选择]If you increase the clearance between a valve stem and rocker arm, which of the listed condition will occur?（）
A. valve will open later
B. valves will close later
C. amount of fuel injected will be increased
D. amount of fuel injected will be decreased
[单项选择]Chart legends which indicate a conspicuous landmark are printed in（）.
A. capital letters
B. italics
C. boldface print
D. underlined letters
[单项选择]Preferred channel buoys indicate the preferred channel to transit by（）.
A. odd or even numbers
B. the color of their top band
C. the location of the buoy in the channel junction
D. the buoy's light rhythms
[多项选择]With regard to bridges and switches, which of the following statements are true?（）
A. Switches are primarily software based while bridges are hardware based.
B. Both bridges and switches forward Layer 2 broadcasts.
C. Bridges are frequently faster than switches.
D. Switches typically have a higher number of ports than bridges.
E. Bridges define broadcast domain while switches define collision domains.
F. Both bridges and switches make forwarding decisions based on Layer 2 addresses.
[单项选择]So far the construction of the two new bridges over the river （）.
A. have been completed
B. has been completed
C. has completed
D. have completed
[单项选择]Valve lash, or clearance refers to the （）
A. clearance between the top of the valve stem and the rocker arm
B. compression of the valve springs
C. clearance between the valve seat inserts and the head
D. out of roundness of the fuel injection cams
