Domestic water pump is started automatically by () which operates as the water level falls to a predetermined level.
相似题目
-
In a domestic fresh water system, the pump starters are controlled by () switches which operate when the pressure in the tank varies within predetermined limits as water is drawn off.
-
The master got permission to pump out 500 tons of clean sea water for ().
-
Cooling water pumps driven by direct reversing diesel engines are usually of the straight impeller vane type pump with a concentric housing to()
-
The pump used to send the bilge water into the oily water separator()the mixture because this might create finer oil particles.
-
The reciprocating pump can’t draw water from a tank may be caused by ().
-
The motor for the fresh water pump ().
-
Which of the following pumps is most suitable for an oily water separator?()
-
About the jacket water, that of the auxiliary engines usually() is circulated by pumps, and the main engine usually ()
-
The fire pumps must be capable of delivering a total quantity of water at a defined head, not less than () of the total bilge pumping capacity.
-
With a vacuum boiling evaporator, the remainder of sea water fed to the evaporator is pumped out by ().
-
In a vacuum boiling evaporator, the fresh water generated is pumped out by ().
-
You are unable to pump out the aft starboard engine room bilge well that is fouled, with one foot of water over the top of the bilge well, what action should be carried out?()
-
A centrifugal pump can’t supply water after startingYou should check ().
-
Sea water temporarily pumped into tanks to simulate the increased vertical loading of environmental forces is termed().
-
Water pump的中文意思是()。
-
A water pump can not supply water after startingIt may be caused by ().
-
The pressure head of a water pump is given in the unit of ().
-
Permission is requested to pump out about 200 tons of clean sea ballast water for () purposes.
-
() provides the head or pressure to supply the domestic water where required.
-
If you were operating a centrifugal water service pump with worn wearing rings, the ().
-
If an operating bilge pump is developing good vacuum, but is unable to discharge any water, which of the following problems is the most probable cause?()
-
As for an oil-fired boiler if at a normal steaming condition and water goes out of sight in gauge glasses the action you should take is: () (1) secure oil to fires (2) increase feed pump pressure
-
What’s the most obvious difference among animal-driven chain pump, water-driven chain pump and wind-driven chain pump?
-
As for an oil-fired boiler if at a normal steaming condition and water goes out of sight in gauge glasses the action you should take is: (1) secure oil to fires; (2) increase feed pump pressure.
推荐题目
- 基本完好房的成新度可以是()。
- 铱-192在水中的强度在近源处随距离变化似呈反平方定律的原因是()
- “获指标逾期不买车”该受罚吗?既然无法保证市民在多长时间内参加摇号一定能摇到,那么就没有理由对那些____ 的市民予以惩罚,这是一个基本的公平。更何况,大到国家政策尚且可能____,普通家庭因为种种原因而临时改变购车计划,凭什么就得挨罚呢? 填入画横线部分最恰当的一项是:
- ()位于变压器油箱上方,通过气体继电器与油箱相通。
- 下面选项中可以作为自动控制系统中的被控对象的是()
- 药物的基本作用中,“指停药后血药浓度已降至阈浓度以下时残存的药理效应”属于()
- 下列属于退休规划的工具的是 () ①社会养老保险;②投资股票;③商业养老保险;④企业年金
- 一作定轴转动的物体,对转轴的转动惯量J=3.0kg·m^2,角速度ω0=6.0rad/s.现对物体加一恒定的制动力矩M =-12N·m,当物体的角速度减慢到ω=2.0rad/s时,物体已转过了角度Aθ=()。
- 白土塔底部一般装有--C)种大小不同的石英砂()
- 3、一点电荷,放在球形高斯面的中心处.下列哪一种情况,通过高斯面的电通量发生变化: