The pH value of water in a diesel engine closed cooling water system should be maintained between （）.
A definite advantage of using water as a fire extinguishing agent is its characteristic of（）.
In a diesel engine cooling water system, a pH of 60 indicates a/an （）.
In a closed cooling water system, which of the problems can cause the water pressure to fluctuate?（）
On open waters，a power-driven vessel shall keep out of the way of a（）.
A three-way thermostatic control valve regulates the diesel engine cooling water temperature by passing a portion of the water （）.
An excessive amount of water is prevented from entering a vessel using a water lubricated stern tube bearing by the use of the （）.
What is NOT a function of the steam drum of a marine water-tube boiler（）.
（）is not a process of weathering of the oil spilled in the sea water.
A diesel engine cooling water system with a pH factor of 30 indicates a condition of （）.
How dose water enter the crankcase of a diesel engine?（）
As a ship moves through the water，it drags with it a body of water called the wake. The ratio of the wake speed to the ship’s speed is called（）.
The pressure head of a water pump is given in the unit of （）.
The straight stream capability of an all-purpose nozzle is used in fighting a class A fire to（）.
In（）the writer introduced the stream-of-consciousness technique as a remarkable means of character portrayal.
The result has been a ________ endless stream of synthetic insecticides……they differ sharply from the simpler prewar days.
True or False. T for true, and F for false.1.Ulysses can be called revolutionary prose, a combination of stream-of-consciousness immediacy and proteanflexibility. ( )
This kind of plant _____ a lot of water at all times.
1. Ron usually drinks a lot of water. （ ）
______tells of the story of two sisters, Laura and Lizzie, who meet a band of goblin folk beside a forest stream, and buy, at the price of a golden lock of hair, a heap of magic fruits.
Water was found at a ______ of 30 meters.
A 100 mL sample of water is titrated with 12. 24.mL. of the EDTA solution（0. 020 40 mol·L -1 ). Calculate the degree of hardness of the water.
请翻译以下内容和10个部件，并简要说明它们的各自功能。 All CRT monitors have a CRT, which is a vacuum tube. One end of this tube is a slender cylinder that consists of three electron guns. The wide end of the CRT is the display screen. When power is applied to one or more of the electron guns, a stream of electrons is generated. This stream is subjected to a magnetic field generated by a ring of electromagnets called a yoke. The phosphor coating, when struck by the electro
