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下列有关Stroke调板描述不正确的是:()
A . 在Stroke调板上,Cap(线端)后面有三个选项:第一种是ButtCap(平端),第二种是RoundCap(圆端),第三种是RectanSleCap(矩形平端)
B . 在Stroke调板上可以任意改变路径的宽度
C . 在Stroke调板的下方有一个选项为DashedLine(虚线),在它的下面有6个数字输入框
D . 在Stroke调板中有一个选项为MiterLimit用来控制斜接的角度,只有Join(线连接)后面使用Miterjoin(斜角连接)时此项才可以设定
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One of the differences between a two-stroke engine and a four-stroke engine is,()
A . a two-stroke engine can’t work without cylinders
B . a two-stroke engine can’t work without pistons
C . a two-stroke engine can’t work without crankshafts
D . a two-stroke engine can’t work without a blower
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In the four-stroke engine, it takes () to make one power stroke.
A . one propulsion
B . two propulsions
C . two revolutions
D . one revolutio
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A two-stroke/cycle diesel engine requires less starting air than a four-stroke/cycle diesel engine, of equal displacement, because the two-stroke/cycle diesel engine()
A . has little or no internal friction
B . has a lower effective compression ratio
C . operates with scavenge air under a positive pressure
D . operates without energy absorbing intake and exhaust stroke
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热射病(heat stroke)
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What are the symptoms of sun stroke?()
A . Temperature falls below normal,pulse is rapid and feeble,skin is cold and clammy
B . Temperature is high,pulse is strong and rapid,skin is hot and dry
C . Temperature is high,pulse is slow and feeble,skin is clammy
D . Temperature falls below normal,pulse is rapid,skin is clammy
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Compared to four-stroke/cycle engines, two-stroke/cycle diesel engines have the disadvantage of ()
A . less even torque
B . higher cylinder head temperatures
C . fewer power strokes per revolution
D . greater weight/size requirement
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下列有关Stroke(笔画)调板描述正确的是:()
A . 在Stroke调板上,Cap(线端)后面有三个选项:第一种是ButtCap(平端),第二种是RoundCap(圆端),第三种是RectangleCap(矩形平端,突出平端)
B . 在Stroke调板上可以任意改变路径的宽度
C . 在Stroke调板的下方选项为Dashedline(虚线),在它的下面有6个数字输入框
D . 在Stroke调板中有一个选项为MiterLimit用来控制斜接的角度,只有Join(线连接)后面使用Miterjoin(斜角连接)时此项才可以设定(当角度固定MiterLimit数值大,可以保持Miterjoin斜角连接,数值小则BevelJoin斜切连接;当MiterLimit数值固定,角度变大后BevelJoin斜切连接即变为Miterjoin斜角连接)
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如何使用stroke或fill颜色框变为活动状态?()
A . 在layer面板中单击stroke或fill框旁边的图标。活动颜色框区域在tools面板中显示为一个被按下的按钮。
B . 在color面板中单击stroke或fill框旁边的图标。活动颜色框区域在tools面板中显示为一个被按下的按钮。
C . 在tools面板中单击stroke或fill框旁边的图标。活动颜色框区域在tools面板中显示为一个被按下的按钮。
D . 在layer面板中单击stroke或fill框旁边的图标。活动颜色框区域在tools面板中显示为一个被按下的按钮。
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()is the main reason that reduces the power advantage of a two-stroke engine over a same size four-stroke one to about()
A . Inefficient scavenging;twice
B . Inefficient scavenging;1~8 times
C . Fewer strokes in a circle;twice
D . Fewer strokes in a circle;1~8 time
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In a four-stroke/cycle diesel engine, after the completion of the power stroke, the piston will move()
A . up and draw in a fresh air charge
B . down to burn off fuel
C . down to compress the fuel air charge
D . up and force out the exhaust gase
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The two strokes of a two-stroke/cycle diesel engine are ()
A . power and intake
B . intake and exhaust
C . exhaust and compression
D . compression and power
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The four strokes are called suction, compression, expansion and exhaust, but only () stroke provides the power to drive the ship.
A . suction
B . compression
C . expansion
D . exhaust
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According to the principle of four stroke diesel engine, what is the number of its efficient work stroke per revolution?()
A . 1/2
B . 1
C . 2
D . 3
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Four strokes consist of suction, compression, () and exhaust stroke.
A . combustion
B . condensation
C . charging
D . evaporatio
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如何交换交换stroke和fill颜色?()
A . A.在tools面板上单击setdefaultstroke/fillcolor按钮
B . B.在tools面板上单击swapstroke/fillcolor按钮
C . C.在tools面板上单击nostrokeorfill
D . D.在tools面板上单击changecolor按钮
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According to the principle of two stroke diesel engine, what is the number of its efficient work stroke per revolution?()
A . 1/2
B . 1
C . 2
D . 3
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Adams-Strokes综合征
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In the suction stroke air is induced into the cylinder ()In the compression stroke the air is compressed.
A . by an fuel valve
B . through an inlet valve
C . with an exhaust valve
D . from an outlet valve
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热射病heat stroke 名词解释
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In four-stroke diesel engine, the cycle of events is completed in () of crankshaft.A.one
In four-stroke diesel engine, the cycle of events is completed in () of crankshaft.
A.one revolution
B.two revolutions
C.four revolutions
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The four strokes of a four-stroke diesel engine according to their sequence are :suction,compression,expansion and exhaust.()
此题为判断题(对,错)。
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Among the four strokes of a four-stroke diesel engine,suction and expansion strokes are the upward strokes.()
此题为判断题(对,错)。