The treatment of the fuel oils involves storage, heating, filtering and（）
A . centrifuging
B . pressurizing
C . atomization
D . igniting
相似题目
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Which of the following methods might be used as the treatment on emulsified oil?（）
A . gravity separation
B . centrifuge
C . Cyclone
D . Cross-flow membrane filtratio
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The cetane rating of diesel fuel is an indication of the（）
A . ignition quality of the fuel
B . calorific value of the fuel
C . flash point of the fuel
D . rate of fuel consumptio
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The basic process of biological sewage treatment consists of the liquor either by bubbling air through it or by agitating the surface（）
A、oxygenating
B、oxidizing
C、deoxygenating
D、proportioning
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The ignition quality of a diesel fuel is indicated by the （）
A . cetane number
B . volatility point
C . viscosity index
D . octane number
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Have
run
out of
fuel, the plane
crashed
to
the ground.
-
The rate of expansion of heated fuel oil varies with the （）.
A . conductivity
B . viscosity
C . volume
D . specific gravity
-
The higher the cetane number, （） the ignition quality of the fuel.
A . the worse
B . the better
C . the smaller
D . the greater
-
The selection of an oil depends （） on the operating conditions, the design of the engine and the type of fuel to be burned.
A . to a great extent
B . on a great extent
C . on mainly
D . on only
-
Air in the fuel lines to the fuel injection nozzles of a diesel will result in （）.
A . lower compression pressures
B . overheating without smoking
C . failure to start
D . a run away without load
-
The fuel injector injects a fine spray of fuel into the hot air and combustion （）, producing much high pressure in the gases.
A . has begun
B . takes place
C . occurs
D . happe
-
Most marine biological sewage treatment plants consist of all the following statements except （）.
A . aeration tanks
B . settling tanks
C . disinfection agent
D . anaerobic bacteria
-
Which of the following represents the significance the fuel oil cetane number?（）
A . The cetane number has no affect on injection lag
B . The cetane number is an indication of the fuel’s viscosity
C . Ignition lag is reduced with fuels having a high cetane number
D . The cetane number is of little significance in the combustio
-
Which of the following statements is true concerning the cetane number of diesel fuel?（）
A . The cetane number affects the amount of injection lag
B . The cetane number is an indication of the fuels viscosity
C . Ignition lag is reduced with fuels having a high cetane number
D . The cetane number is of little significance in the combustion proce
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In comparative experiments, members of the complementary group, the ______, receive either no treatment or a standard treatment.
-
Ofloxacin Tablets are indicated for the treatment of patients with respiratory infections.
-
The processes of surface engineering, or surface treatments, tailor the surfaces of e
A．A.control friction and wear
B．B.improve corrosion resistance
C．C.change physical property
D．D.alter dimension and vary appearance
-
Which of the following is true of the other factors fueling the bankruptcy rise？
A．Lack of medical insurance has brought about social troubles.
B．Unemployment has impaired cardholders" ability to repay debts.
C．The growth of gambling industry has inhibited money wasting.
D．Government authorities have decided to legalize bankruptcy.
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The author's treatment of the "hyperenthusiasts" can best be described as one of_____.
A．tolerance
B．appreciation
C．dismissal
D．sarcasm
此题为多项选择题。
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It is the prevention of disease ______its successful treatment that has led to the rapid increase of the world' s population.
A．rather than
B．including
C．but also
D．less than
-
Throughout the course of treatment, attention _____on the general physical health.
A．A.focused
B．B.was focused
C．C.attracted
D．D.was attracted
-
It can be seen from the last paragraph that treatment of the disorder______.
A．has no positive effect at all
B．is unavailable to most sufferers
C．tends to be refused by the sufferers
D．can lead to improvement in the sufferers' lives
-
Which of the following is the equivalent to fossil fuel？
A．Coal.
B．Petrol.
C．Natural gas.
D．Electricity.
此题为多项选择题。
-
The author's treatment of the "hyperenthusiasts" can best be described as one of
A．tolerance
B．appreciation
C．dismissal
D．sarcasm
此题为多项选择题。
-
He concluded that empirical evidence supports the___of these treatments（）
A．efficiency
B．efficacy
C．affect
D．affection
