更多"Between the steam dram and the smal"的相关试题:
[单项选择]The load between two steam-driven alternators operating in parallel may be adjusted by varying （）
A. the speed of the alternators
B. the field strength of the machines
C. the power factor of the alternators
D. steam supply to the prime movers
[单项选择]Large pipes or （） are fitted between the steam and water drums to ensure good natural circulation of water.
A. fire-tubes
B. furnaces
C. down-comers
D. soot-blowers
[单项选择]A high rate of separation between oil and water is favored by （）.
A. large size of oil globule
B. low temperature
C. high viscosity
D. high flow rate
[单项选择]In an auxiliary boiler steam and water system, the highest pressure will be in the （）.
A. steam stop valve
B. dry pipe
C. feedwater system
D. generating tubes
[单项选择]Water evaporates or steam condenses at the saturation temperature, which depends upon the pressure, the higher the pressure （） the saturation temperature.
A. the more
B. the higher
C. the lower
D. the highest
[单项选择]The distance between the surface of the water and the tidal datum is the （）.
A. range of tide
B. height of tide
C. charted depth
D. actual water depth
[单项选择]The interface between the liquid seal (water) and the oil should be positioned （） possible to the bowl periphery.
A. as far as
B. as soon as
C. as close as
D. as closer as
[单项选择]When steam is being raised on a boiler, the water level will normally （）.
A. drop as the boiler warms up
B. rise as the boiler warms up
C. remain unchanged until the boiler is hot enough
D. rise and fall with the steam demand
[单项选择]The difference in water spray pattern between the high-velocity tip and low-velocity applicator used with the all-purpose nozzle is due to（）.
A. a difference in water pressure
B. the method of breaking up the water stream
C. the length of the applicator
D. All of the above
[单项选择]A wedge of water building up between the bow and nearer bank which forces the bow out and away describes（）.
A. bank cushion
B. bank suction
C. combined effect
D. bend effect
[单项选择]The steam boiler is part of a closed loop steam, whereby, after the energy of the steam is used up and it becomes water again, （） is collected and returned back to the boiler for heating up again to steam.
A. the former
B. the first
C. the latter
D. the last
[单项选择]下面哪个不是对传统的DRAM单元进行了优化，改进了访问基本DRAM单元的速度？（）
A. 快页模式DRAM
B. 音频RAM
C. 扩展数据输出DRAM
D. 同步DRAM
[单项选择]EDO DRAM是指（）
A. 快页模式DRAM
B. 同步DRAM
C. 视频DRAM
D. 扩展数据输出DRAM
[单项选择]一个DRAM芯片的超单元被组织成一个4行4列的阵列，每个超单元都由8个DRAM单元组成，那么这个DRAM总共存储了（）位信息
A. 16
B. 32
C. 64
D. 128
[单项选择]动态DRAM的特点是（）。
A. 在不断电的条件下，其中的信息保持不变，因而不必定期刷新
B. 在不断电的条件下，其中的信息不能长时间保持，因而必须定期刷新
C. 其中的信息只能读不能写
D. 其中的信息断电后不会消失
[多项选择]SRAM和DRAM的区别？（）
A. SRAM比DRAM功耗高
B. SRAM比DRAM成本高
C. SRAM比DRAM速度快
D. SRAM比DRAM散热大
[单项选择]When distilling salt water the cooling water discharging from the distiller is fed back to evaporator as feed water （）.
A. to cut down the amount of cooling water needed
B. to prevent an excess amount of cooling water from being discharged to the bilges
C. to supply hot water to the evaporator for more economical operation
D. None of the above is tree
[单项选择]When distilling sea water the cooling water discharging from the distiller is fed back to evaporator as feed water （）.
A. to decrease scale formation
B. for better cooling effect
C. for more economical purpose
D. to raise vacuum
