更多"As the plunger moves up, the ports "的相关试题:
[单项选择]As the plunger moves upwards in the barrel, injection will commence once the plunger has （） the spill ports and the pressure builds up.
A. opened up
B. closed off
C. lined up
D. taken off
[单项选择]While engine is in operation the piston moves up and down, thus causing the rotation of the （）.
A. crankcase
B. slipper
C. cam housing
D. crankshaft
[单项选择]The piston moves up and down, thus causing the rotational movement of the（）
A. crankshaft
B. connecting rod
C. cross-head
D. main beating
[单项选择]All lighterage in or off ports of loading or ports of discharge shall be for the account of （）.
A. the carrier
B. the merchant
C. the owner
D. the shipper
[单项选择]The amount of fuel delivered by a helical plunger fuel injection pump is controlled by （）
A. varying the pump discharge pressure
B. varying the pump return pressure
C. rotation of the pump plunger
D. rotation of the pump barrel
[单项选择]The plunger in the fuel injector pump, usually operated by a （）, is driven up and down when working.
A. crankshaft
B. camshaft
C. piston rod
D. rack and pinion
[单项选择]The plunger is machined to very fine tolerances, as is the matched（）in which it reciprocates.
A. barrel
B. ram
C. piston
D. rod
[单项选择]If the plunger or barrel of a fuel injection jerk pump becomes damaged,（）
A. only the replacement of the entire pump would be acceptable
B. the injection pump and injection nozzle must be replaced
C. either the barrel or plunger must be replaced
D. the barrel and plunger must be replaced as a unit
[单项选择]A common trouble with the fuel pump plunger or fuel valve spindle is （）.
A. water leakage
B. steam leakage
C. oil leakage
D. air leakage
[单项选择]The plunger may be rotated in the barrel by a rack and （） on a sleeve which is keyed to the plunger.
A. pinion arrangement
B. push rod
C. handle bar
D. cam device
[单项选择]The plunger in a jerk pump is rotated until the release port is uncoveredIf the port remains uncovered all of the time, which of the listed operations will occur?（）
A. No fuel will be delivered
B. The maximum effective stroke will be attained
C. The fuel delivered to the cylinder will be excessive
D. The injection nozzle will overheat and carbonize
[单项选择]Three access ports have been installed and configured to a small office.What term defines the wireless topology?（）
A. IBSS
B. BSS
C. ESS
D. SSID
[单项选择]The information regarding ports such as buoyed channels,fairway,location and number of terminals,river channels,details of navigational marks,location of overhead bridges, underground cables etc. are shown in（）
A. small-scale charts
B. medium-scale charts
C. large-scale charts
D. natural scale charts
[单项选择]When inspecting piston rings through the ports of a two-stroke/cycle diesel engine, black areas on the sealing surfaces are the result of （）
A. insufficient lubrication
B. improper piston cooling
C. blow-by
D. overload operation
[单项选择]Topside icing that blocks freeing ports and scuppers（）.
A. is usually below the center of gravity and has little effecton stability
B. will cause water on deck to pocket and increase stability
C. may decrease stability by increasing free surface effect due to water on deck
D. increases the effective freeboard and increases thewind-heel affect
[单项选择]Clogged or partially obstructed exhaust ports on a diesel engine can cause（）
A. over-speeding of the engine
B. failure of the engine to shut down
C. no effect of engine mounting bolts
D. high exhaust temperatures
[单项选择]Directional intake ports in diesel engines are used to （）.
A. reduce air charge turbulence
B. induce air swirl
C. deflect hot combustion gas away from the valves
D. oppose the effects of piston induced squish
[单项选择]A switch is configured with all ports assigned to vlan 2 with full duplex FastEthernet to segment existing departmental traffic. What is the effect of adding switch ports to a new VLAN on the switch?（）
A. More collision domains will be created.
B. IP address utilization will be more efficient.
C. More bandwidth will be required than was needed previously.
D. An additional broadcast domain will be created.
[单项选择]A workgroup switch is configured with all ports assigned to VLAN 2. In addition,all ports are configured as full-duplex FastEthernet. What is the effect of adding switch ports to a new VLAN on this switch?（）
A. The additions will create more collision domains.
B. IP address utilization will be more efficient.
C. More bandwidth will be required than was needed previously.
D. An additional broadcast domain will be created.
E. The possibility that switching loops will occur will increase dramatically.
