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单选题
The principal difference between loop scavenging and crossflow scavenging, as used in single acting diesel engines, is the （）
A
direction of air flow within the cylinder
B
sequence of port opening
C
method of opening exhaust ports
D
volume of air admitted to the cylinder
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The height of tide is the ______.A.depth of water at a specific time due to tidal effectB.difference between the depth of the water and the area's tidal datumC.difference between the depth of the water and the high water tidal levelD.difference between the depth of the water at high tide and the depth of the water at low tide
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The maximum difference between mean time and apparent time is ______.A.equal to the longitude expressed in time unitsB.about 16 minutesC.the difference between the GHA of mean sun and the first point of AriesD.15°of arc
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Forces within a vessel have caused a difference between the starboard and port drafts. This difference is called ______.A.listB.heelC.trimD.Flotation
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Magnetic compass deviation______．A.varies depending upon the bearing usedB.is the angular difference between magnetic north and compass northC.is published on the compass rose on most nautical chartsD.is the angular difference between geographic and magnetic meridians
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To Edward Hall the principal difference between cultures is whether they are monochromic or polychromic.In monochromic cultures（United States,Northern Europe）people do things one by one.They follow schedules because time can be squandered or saved.Promptness is essential,and one who is late has_________a grave offense.A.made
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For Krashen, the affective filter is the principal source of individual difference in second language acquisition.（）A对B错
考题
For Krashen, the affective filter is the principal source of individual difference in second language acquisition.（）
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What does the command show | compare rollback 1 display?（）A、the difference between the current candidate configuration and the candidate configuration from one commit agoB、the difference etween the current active configuration and the active configuration from the one commit agoC、the difference between the current active configuration and the active configuration from one commit agoD、the difference between the current candidate configuration and the archived configuration from one commit ago
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There is no difference between the environmental logistics and （）one.A、whiteB、redC、blueD、green
考题
There is no difference between the environmental logistics and （）one . A、whiteB、redC、blueD、green
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What does the command show | compare rollback 1 display?（）A、the difference between the current candidate configuration and the candidate configuration from one commit agoB、the difference between the current active configuration and the current candidate configurationC、the difference between the current active configuration and the active configuration from one commit agoD、the difference between the current candidate configuration and the archived configuration from one commit ago
考题
单选题What does the command show | compare rollback 1 display?（）A
the difference between the current candidate configuration and the candidate configuration from one commit agoB
the difference between the current active configuration and the current candidate configurationC
the difference between the current active configuration and the active configuration from one commit agoD
the difference between the current candidate configuration and the archived configuration from one commit ago
考题
单选题The maximum difference between mean time and apparent time is （）.A
equal to the longitude expressed in time unitsB
about 16 minutesC
the difference between the GHA of mean sun and the first point of AriesD
15°of arc
考题
单选题Which of the following definitions can be used to define the term ‘offset ’ as a characteristic of controller action?（）A
The period of time in which the set point and the control point coincideB
The periodic change between the set point and the control pointC
The variable difference between the set point and the control pointD
The constant difference between the set point and the control point
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单选题What could cause a significant difference between actual chain tension and the tension measured by the tensiometer? （）A
The type of anchor and mooring line being usedB
The type of bottom in which the ship is anchoredC
A significant difference between air and water temperatureD
The chain contacting a chock or fairlead between the tensiometer and the lower swivel fairlead
考题
单选题What does the command show | compare rollback 1 display?（）A
the difference between the current candidate configuration and the candidate configuration from one commit agoB
the difference etween the current active configuration and the active configuration from the one commit agoC
the difference between the current active configuration and the active configuration from one commit agoD
the difference between the current candidate configuration and the archived configuration from one commit ago
考题
单选题Forces within a vessel have caused a difference between the starboard and port drafts. This difference is called（）.A
listB
heelC
trimD
flotation
考题
单选题A wind has caused a difference between drafts starboard and port. This difference is（）.A
listB
heelC
trimD
flotation
考题
单选题Forces within a vessel have caused a difference between the starboard and port drafts,This difference is called（）.A
listsB
heelC
trimD
flotation
考题
单选题A process of comparing the actual performance of a machine with the intended performance, and the adjusting the machine to reduce and eventually eliminate the difference between the actual and intended performance is called（）A
open loop controlB
feedbackC
combining controlD
integral process
考题
单选题Magnetic compass deviation（）.A
varies depending upon the bearing usedB
is the angular difference between magnetic north and compass northC
is published on the compass rose on most nautical chartsD
is the angular difference between geographic and magnetic meridians
考题
单选题In a turbocharged four-stroke/cycle diesel engine, the exhaust valve remains open until after top dead center and the intake valve opens before top dead center to（）.A
produce a scavenging effect in the combustion spaceB
equalize cylinder and exhaust manifold pressuresC
alleviate the difference in valve size between the intake and exhaustD
flush out condensate that collects after each compression stroke
考题
判断题For Krashen, the affective filter is the principal source of individual difference in second language acquisition.（）A
对B
错
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