更多"（） pistons have low inertia and hig"的相关试题:
[单项选择]Aluminum pistons have （） coefficient of thermal expansion compared with those of cast iron.
A. higher
B. lower
C. the same
D. none of the above
[单项选择]The period at high or low tide during which there is no change in the height of the water is called the （）.
A. range of the tide
B. plane of the tide
C. stand of the tide
D. reversing of the tide
[单项选择]High pressure and low pressure alarms must be tested（）.
A. no earlier than 24 hours prior to loading
B. no later than 24 hours prior to loading
C. anytime prior to loading
D. weekly
[单项选择]High firing pressures and a low exhaust temperature in a diesel engine may result from （）.
A. decreased piston to cylinder head clearance
B. increased exhaust system back pressure
C. early fuel injection timing
D. low scavenge air temperature
[单项选择]What separate the high pressure side from the low pressure side in a refrigeration system?（）
A. Condenser and thermal expansion valve
B. King and solenoid valves
C. Compressor and thermal expansion valve
D. Condenser and solenoid valve
[单项选择]Low cylinder compression pressure and a high exhaust temperature may indicate （）
A. early fuel injection timing
B. leaking valves
C. a continuously open scavenge air port
D. low cooling water temperature
[单项选择]High cylinder firing pressure, accompanied by low exhaust temperature, can result from （）
A. improper fuel rack positing
B. lengthy exhaust valve duration
C. extend operation at light load
D. excessively early injection timing
[单项选择]The difference between the heights of low and high tide is the（）.
A. period
B. range
C. distance
D. depth
[单项选择]风挡排雨系统风挡雨刷的工作由P5板底部的三位旋钮(HIGH,LOW,OFF)控制：（）
A. HIGH位马达线圈串联, LOW位马达线圈并联，OFF位马达反转到停留位后断电
B. HIGH位马达线圈并联, LOW位马达线圈串联，OFF位马达反转到停留位后断电
C. HIGH位马达线圈并联, LOW位马达线圈串联，OFF位马达正转到停留位后断电
D. HIGH位马达线圈串联, LOW位马达线圈并联，OFF位马达正转到停留位后断电
[单项选择]The device used for low-pressure control and high-pressure cutout on a compressor is called a（）
A. cutout
B. pressure controller
C. controller switch
D. cutout switch
[单项选择]If both the “high level” and “low level” alarms come on for the same address of a centralized control console, the most likely problem is a/an （）.
A. sensor failure
B. failed alarm
C. low level
D. extremely high level
[单项选择]The spray of water in low-velocity fog will have（）.
A. greater range than high-velocity fog
B. lesser range than high-velocity fog
C. about the same range as high-velocity fog
D. greater range than a solid stream
[单项选择]An aluminum piston has lower inertia and higher coefficient of （） compared to that of cast iron.
A. viscosity
B. twisting moments
C. inertia
D. thermal expansion
[简答题]离线LOW-E与在线LOW-E的优缺点？
[单项选择]low flow sensor位于（）
A. 主电子设备舱
B. 驾驶舱
C. 前电子设备舱
D. 空调舱
[简答题]中空LOW-E玻璃可否做弯钢？如果能够做有没有限制？双片夹胶玻璃可否做LOW-E？
[单项选择]The primary reason low pressure evaporators produce distillate more efficiently, and with less scale formation, than high pressure evaporators is （）.
A. evaporation is accomplished in a vacuum
B. due to the higher temperature of the incoming feed
C. due to the latent heat of evaporation principle
D. evaporation in a submerged medium produces more distillate
