更多"At bottom dead center, the centerli"的相关试题:
[单项选择]
The exhaust valve opens before bottom dead center in a four stroke engine to（）
Ⅰ.allow for blow down
Ⅱ.Reduce pumping losses
A. Ⅰ only
B. Ⅱ only
C. both Ⅰ and Ⅱ
D. neither Ⅰ nor Ⅱ
[单项选择]A piston is at bottom dead center when it is（）
A. opening the exhaust ports
B. closing the fuel ports
C. farthest from the cylinder head
D. nearest to the cylinder head
[单项选择]A piston is said to be at top dead center when it is （）
A. opening the exhaust ports
B. placed on top of the engine along its centerline
C. farthest from the cylinder head
D. nearest to the cylinder head
[单项选择]Current measuring instruments must always be connected in （）
A. series with a circuit
B. parallel with a circuit
C. series-parallel with a circuit
D. delta with the shunt
[单项选择]Cisco Catalyst switches CAT1 and CAT2 have a connection between them using ports FA0/13. An 802.1Q trunk is configured between the two switches. On CAT1, VLAN 10 is chosen as native, but on CAT2 the native VLAN is not specified.What will happen in this scenario?（）
A. 802.1Q giants frames could saturate the link.
B. VLAN 10 on CAT1 and VLAN 1 on CAT2 will send untagged frames.
C. A native VLAN mismatch error message will appear.
D. VLAN 10 on CAT1 and VLAN 1 on CAT2 will send tagged frames.
[单项选择]The auxiliary engine and a cgenerator can be connected with （）.
A. cam
B. crosshead
C. bulge
D. coupling
[单项选择]Which type of cable should be used to make a connection between the Fa0/0 port on a router and the Fa0/0 port switch?（）
A. Rollover cable
B. Console cab le
C. Crossover cable
D. Straight-through cable
E. Serial cable
[多项选择]While troubleshooting some connectivity issues， you issue the "show ip ospf database" in order toexamine the link state database. Which three of the statements below are true regarding theOSPF link state database？（）
A. Each router has an identical link state database
B. External routes are imported into a separate link state database
C. Synchronization of link state databases is maintained via flooding of LSAs
D. Information in the link state database is used to build a routing table by calculating a shortest-path tree
E. By default， link state databases are refreshed every 10 minutes in the absence of topologychanges
[单项选择]The inner bottom is the（）.
A. tank top
B. compartment between the tank top and shell of the vessel
C. inner side of the vessel's shell
D. space between two transverse bottom frames
[单项选择]Insufficient space between the hull and bottom in shallow water will prevent normal screw currents resulting in （）.
A. waste of power
B. sudden sheering to either side
C. sluggish rudder response
D. All of the above
[单项选择]The claim for dead freight being a claim for damages for breach of contract，the Shipowner is under a duty，where the Charterer fails to load a full and complete cargo，（）the damage by obtaining other cargo，provided he acts reasonably in so doing.
A. to minimize
B. minimizing
C. minimized
D. have minimized
[单项选择]You should plot your dead reckoning position（）.
A. From every fix or running fix
B. From every estimated position
C. Every three minutes in pilotage waters
D. Only in pilotage waters
[单项选择]Moving of an anchor over the sea bottom involuntarily because it is no longer preventing the movement of the vessel defines（）.
A. dredging ( of anchor )
B. dragging ( of anchor )
C. weighing anchor
D. walking out anchor
[单项选择]Deballasting a double bottom has what affect on KG?（）
A. KG is increased
B. KG is decreased
C. KG is not affected
D. KG increases at light drafts and decreases at deep drafts
[单项选择]The ocean bottom that extends from the shoreline out to an area where there is a marked change in slope to a greater depth is the（）.
A. abyssal plain
B. continental shelf
C. borderland
D. offshore terrace
[单项选择]The perforated，elevated bottom of the chain locker，which prevents the chains from touching the main locker bottom and allows seepage water to flow to the drains，is called a（）.
A. cradle
B. draft
C. harping
D. manger
[单项选择]A “dead front” switchboard is one （）.
A. without switches on it
B. with insulated switches and no exposed terminals
C. without circuit breakers
D. without safety hand nails nor rubber mats
