As mentioned,“grey water”can be used to______.
A.wash the car
B.water the garden
C.clean the toilet
D.dispose of wastes
第1题:
29. The writer thinks that people in large cities should __________ .
A. stop the used water from getting into underground
B. only use the water from the rivers
C. make their used water clean again
D. use as much sea water as possible
第2题:
A、After listening, the students are required to copy the listening material.
B、After listening, the students are required to write a summary of the text in a few sentences.
C、While listening, the students are required to look at a list of words and circle those used by the speaker.
D、After listening, the students are required to arrange the sentences in the order in which they are mentioned in the text.
第3题:
第4题:
Which two statements are true regarding the USING clause in table joins?()
第5题:
Which three tasks can be performed using regular expression support in Oracle Database 10g?()
第6题:
overhauling every two year
working at intervals
renewing filtration material
pumping bilge water from different layers respectively
第7题:
A lightly laden vessel requires as much stopping distance as a fully laden vessel when the current is from astern
A vessel is dead in the water when the back wash from astern operation reaches the bow
A tunnel bow thruster can be used in an emergency to reduce the stopping distance
When a vessel is dead in the water any speed displayed by doppler log reflects the current
第8题:
The world population is increasing faster and faster.
Half of the world’s water resources have been seriously polluted.
Humanity has not placed sufficient value on water resources.
Only half of the world’s water can be used.
第9题:
used; keeping
was used; keeping
is used; to keep
are used; keep
第10题:
The fuel oil
The lube oil
The sea water
The fresh water
第11题:
It is used by the residents of Toronto.
It is returned to a place deep in the lake.
It is cooled down before being used again.
It is added to the water inside air-conditioning systems.
第12题:
It keeps buildings much cooler than other methods.
It can be used by large cities anywhere in the world.
It is much more energy-efficient than traditional systems.
It keeps water from being used for more than one purpose.
第13题:
One advantage of the all-purpose nozzle is that it ______.
A.can fit any size hose
B.converts a stream of water into a fog
C.increases the amount of water reaching the fire
D.can spray two streams of water at the same time
第14题:
According to the last paragraph, the fourth way is "of a different kind" because( )
[A] the first three ways can increase the water supply, while the fourth one can't
[B] the first three ways can make a better use of water, while the fourth one can't
[C] the first three ways is technology-based, while the fourth one is market-based
[D] the first three ways can't balance the supply and demand of water, while the fourth one can
第15题:
第16题:
水泥涂料用于淡水舱和双层底舱。()
第17题:
The gasket should be cleaned thoroughly with cold water.
Mild detergent and hot water can best clean the cooker.
Soapy water will often damage the cooker.
Sand can be used to clean the cooker.
第18题:
Hydrochloric acid
Chlorine
Sulfuric acid
Zinc chromate
第19题:
It is MOST effective on very hot oil fires where the temperatures of the liquid exceed 100°C (212°F)
Most foams can be used with dry chemicals to attack a fire by two methods
Foam is effective on combustible metal fires
Foam can be made with seawater or fresh water
第20题:
lower than;can lubricate
lower than;can cool
higher than;can enter
higher than ;cannot enter
第21题:
Because the piston is exposed to very high temperature, it must be cooled
The lower the piston cooling temperature is, the better it is
Both water and lube oil can be used as coolant
One of the piston cooling methods is vibration cooling, with better effect
第22题:
Class A
Class B
Class C
B+C
第23题:
M/E turbocharger
exhaust gas boiler
incinerator
fresh water generator