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slideUp（）方法的speed属性可以是（）。
- A、300
- B、slow
- C、fast
- D、normal
参考答案
更多 “slideUp（）方法的speed属性可以是（）。A、300B、slowC、fastD、normal” 相关考题
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A diesel engine experiences a sudden loss in speed, accompanied by black exhaust smoke, with the fuel rack at maximum, and speed remaining below normal .the probable ___.A.engine overloadB.leaky valvesC.stuck or broken piston ringsD.low air injection pressure
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YoucreateaWebpagethatcontainsdrop-downmenusthataredefinedbyusingdivtagsinthefollowingcode.YouneedtowriteaJavaScriptfunctionthatwillenablethedrop-downmenustoactivatewhentheuserpositionsthemouseoverthemenutitle.Whichcodesegmentshouldyouuse？（）A.$（.dropdown-menu）.hover（function（）{$（.menu-items）.slideDown（100）；}，function（）{ $（.menu-items）.slideUp（100）；}）；B.$（.dropdown-menu）.hover（function（）{$（.menu-items，this）.slideDown（100）；}，function（）{$（.menu-items，this）.slideUp（100）；}）；C.$（.dropdown-menu）.hover（function（）{$（this）.slideDown（100）；}，function（）{$（this）.slideUp（100）；}）；D.$（.dropdown-menu）.hover（function（）{$（this.menu-title，）.slideDown（100）；}，function（）{$（this.menu-title，）.slideUp（100）；}）；
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If the compensating needle valve of a hydraulic governor is opened more than necessary the governor will .A.have a larger than normal dead bandB.produce excessive speed response to a load changeC.respond slowly to any change in engine loadD.stabilize engine speed at the new governor setting
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______is a precaution which contributes to avoiding trouble under normal operating conditions.A.Constant inspectionB.Keeping constant loadC.Remaining constant temperatureD.Varying speed
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单选题A diesel engine is turned at normal cranking speed, but fails to fireThis can occur from （）A
low lube oil temperatureB
low starting air temperatureC
air in the fuel injectionD
water in the starting air system
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单选题The knock occurring when a cold diesel engine is started and continues while running at low speed, but stops when the engine reaches normal operating speed and temperature, is（）.A
caused by retarded injection timingB
caused by a mechanical defect in one cylinderC
caused by high fuel injection pressuresD
normal for these conditions
考题
单选题（） is a precaution which contributes to avoiding trouble under normal operating conditions.A
Constant inspectionB
Keeping constant loadC
Remaining constant temperatureD
Varying speed
考题
单选题A diesel engine experiences a sudden loss in speed, accompanied by black exhaust smoke, with the fuel rack at maximum, and speed remaining below normal the probable（）A
engine overloadB
leaky valvesC
stuck or broken piston ringsD
low air injection pressure
考题
单选题If a diesel engine is difficult to start and operates with the engine temperatures lower than normal, you should suspect that the （）.A
compression pressures are below normalB
lube oil is diluted with fuel oilC
cranking speed is too lowD
exhaust system is partially restricted
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单选题If a camshaft-less engine has a normal injection pressure at rated speed, the injection pressure will be at slow speed（）A
too lowB
a little lowerC
a little higherD
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单选题A four-stroke/cycle, 1000horsepower diesel engine fails to start at normal cranking speed with normal fuel pressure and ambient temperatureThe reason for the failure could be（）A
glazed liners or pistonsB
high lube oil pressureC
excessive compression ratioD
worn valve seats and valves
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单选题If a diesel engine turned over at normal cranking speed but failed to start, the cause could be late fuel injection or （）A
excessive fuel pressureB
high lube oil viscosityC
inadequate fuel injectionD
excessive starting air pressure
考题
单选题Adjustments to the compensating needle valve in a hydraulic governor should be made with the engine at （）A
maximum power at a normal loadB
maximum power and load under normal conditionsC
half speed and normal temperatureD
normal operating temperature without a load
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单选题When attempting to restart a warm high-speed engine, which of the following reactions can you expect?（）A
Excessive fuelB
Higher than normal temperatures for star upC
Longer starting periodsD
Higher than normal lube oil pressure
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单选题A diesel engine which is rated for normal operation at a crankshaft speed of 800 RPM, is commonly classed as a （）.A
slow-speed dieselB
medium-speed dieselC
high-speed dieselD
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单选题A diesel engine is turned at normal cranking speed and no ignition occursThis could be the result of （）A
low lube oil temperatureB
low starting air temperatureC
air bubbles in the fuel oil systemD
water in the starting air system
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单选题_______ is a type of activity in which the teacher reads out a passage in normal speed for two or three times and students note down the words they could catch as they listen as much as possible.A
Answering questionsB
Gap-fillingC
DictoglossD
Sequencing
考题
单选题When ship is fouled, increasing the fuel injection for keeping the normal speed will cause the main engine （）A
to work as overload characteristicB
overspeedC
over mechanical load onlyD
over thermal load only
考题
单选题If a cam-controlled engine has a normal injection pressure at rated speed,the injection pressure will be（）at slow speed.A
a little lowerB
a little higherC
too lowD
exactly the same
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