Hot gas bypass is one of the methods used to （）

A . bypass exhaust gas at high loads to prevent excessive back pressure B . bypass a portion of the exhaust gas at peak loads for better efficiency C . recycle exhaust gas to the turbocharger D . minimize moisture condensation in the boiler gas passages at low load

A . It increases its volume B . It reduces its volume C . It has less product per volume D . None of the above

A . Cards can be added and then enabled via Hardware Management Console (HMC) GUI or command line.  B . The HMC allows access to the Advanced System Management Interface (ASMI), where the slots can be managed.  C . If the empty slot was already allocated to an LPAR, the LPAR can use the card after the cfgmgr script has been run.  D . The Hardware Management Console (HMC) GUI can guide a customer through the process of adding a card to an empty slot.&e

A . aeration of the oil B . contamination of the oil C . pump cavitation D . spongy actuator movement

A . prevent engine back pressure at heavy loads B . increase total engine efficiency at low loads C . prevent boiler corrosion at low engine loads D . improve engine fuel consumption at any load

A . Starting a Smurf attack B . Conducting social engineering C . Creating a back door D . Launching a DoS attack

A . at the compressor discharge B . at the compressor suction C . in the expansion valve D . in the receiver

A . the oil separator B . the fresh water generator C . the compressor D . fire pum

A . allow sufficient oxygen in the tank to sustain life B . prevent outside air from entering the tank C . provide more discharge pressure D . comply with pollution regulatio

A . the supply of normal air and removal of compressed air B . the supply of fuel oil and combustion of the atomized oil C . the supply of fresh air and removal of exhaust gases D . the supply of fresh air and removal of the extra heat

A . starting air bottles B . diesel engines C . boilers D . refrigeration compressor

A . control the pressure of the oxygen as it enters the body B . allow the wearer to manually give himself oxygen C . release excess heat which would otherwise cause the bottle to explode D . allow exhaled gases to pass outside the bottle

A . to give off；which B . giving off；which C . to give off；that D . giving off；that

A . pressure B . toxicity C . temperature D . flammability

A . Scrubber B . Demister C . Deck water seal D . Final filter

“When I’m on the road driving our taxi I feel very proud，because this is the first taxi service only for women,” says 31­year­old Shanti Sharma, who is one of eight female drivers with a taxi service called Cabs for Women by Women. The last couple of months, since the rape and murder in the city of a college student travelling on a bus, have been particularly busy for her and her colleagues. “After this case，our workload has increased so much,” says Sharma.“Women who used other cab services are also turning to us now.” Most women in Delhi say they routinely face harassment(骚扰), and worse, especially on public transport. Sharma, a single parent with three daughters, has been working as a taxi driver since 2011, when the service was first set up, and it has changed her life. This is the first time that she has earned enough—about 250 a month—to support her family. Of course, she and the other female taxi drivers are completely outnumbered by male cabbies.“When I park somewhere there are always men there and inevitably five or six of them get together and hang out, ” she says.“I’m usually the only woman in the parking lot, so I just stay inside the car.” It’s not much better when she is out on the road. Sharma says the male drivers give her a hard time.“As soon as they see a woman at the wheel they start honking(按喇叭) for no reason. They’ll try to overtake you. I’m always worrying about how to avoid getting hit by someone.” The company behind Cabs for Women by Women, Sakha Consulting Wings, had a number of goals when it set up the service .It wanted to give women from poor backgrounds an opportunity to earn money. By putting women in charge of technologies, it also wanted to change people’s attitudes, and open up boundaries for women. 21、The taxi service Cabs for Women by Women _____. A、is greatly needed at present in India B、causes a hot debate in India C、was set up in 2012 D、is free of charge for women 22、Why are women who used other cab services turning to Cabs for Women by Women？ A、Because it is cheap. B、Because it is safe. C、Because it is famous. D、Because it is convenient. 23、What do we know about Sharma？ A、She is the first female taxi driver in Delhi. B、She lives in harmony with her husband. C、She has regretted becoming a taxi driver. D、She has a better salary after becoming a taxi driver. 24、What is the main idea of the last paragraph？ A、The opportunities Cabs for Women by Women provides for women. B、The main purposes of Cabs for Women by Women. C、People’s attitudes towards Cabs for Women by Women. D、The background information of Cabs for Women by Women.

Another way is energy conservation (节能 ), which means using energy more efficiently (有效地 ). In some very cold countries people build special houses to save energy. They place materials between the inside and the outside of the walls of the house to keep the cold out and the warmth in. The house is heated by the lights, the body heat of the people and the other equipment in it. Finally, renewable energy sources are used even though they are often expensive to develop. One form. of these is geothermal energy. In certain parts of the world the temperature of the earth increases thirty degrees centigrade with each kilometer down. At six kilometers, therefore, it rises to nearly two hundred degrees. To get the heat, water is pumped (压;抽 ) down into the rocks and back up to the surface. Heat from the earth is already used in certain countries. 1、How many ways of dealing with the energy problem are discussed in the text？ () A、Two. B、Three. C、Four. D、Five. 2、From the text we learn that coal(). A、is quite easy to produce B、is not used most efficiently C、is the most common source of energy D、could be renewed only by new technology 3、The writer tells about the "special houses" because they(). A、show the excellent skills of the builders B、serve as an example of energy conservation C、are heated by different sources of energy D、are warmer than other types of houses 4、The underlined words "geothermal energy" in the third paragraph mean (). A、renewable source B、 underground source C、 heat inside the earth D、 temperature of the earth 5、At a place where the surface temperature is 15°C, how deep do you have to dig so as to get a temperature of 75 °C ？ () A、One km. B、 Two km. C、 Three km. D、 Four km

The first study was done at Duke University in Durham, North Carolina. Researchers pumped extra carbon dioxide into a test area where pine trees were growing. The trees grew thirty-four percent faster during the first three years. However, in time, the trees slowed to about their normal growth rate. The scientists say this is because trees need other nutrients, such as nitrogen. In the second study, researchers from Duke and Bowdoin College in Brunswick, Maine examined the soil around trees. They discovered that as the leaves broke down into the soil, all the carbon was not trapped in the soil. Much of it was released into the atmosphere as carbon dioxide. The findings of the two studies were published last month in Nature magazine. They suggest there is limited value in planting trees to reduce the carbon dioxide pollution in the atmosphere. Forest planting has been a part of negotiations on a world agreement to reduce greenhouse gases that scientists believe cause global warming. The United States, Canada, Japan and some other industrial countries have supported the idea. But this new research suggests the idea is not as effective as environmental activists had thought. Scientist Ram Oren of Duke University led the study on tree growth. He says that earlier estimates on the ability of forests to absorb carbon dioxide were overly hopeful. Some scientists not involved in the studies say the research provides some of the first evidence on how trees react to carbon dioxide. Other scientists say the research disputes a belief among some coal and power companies. The companies say that rising levels of carbon dioxide in the atmosphere will not create harmful global warming. Instead, they say it will increase forests and other plants. What is the purpose of this passage？ A．Introduce some new ideas about the relationship between trees and carbon dioxide. B．Introduce recent condition of global industrial pollution. C．Call on people to plant more trees to reduce greenhouse gases. D．Point out that power companies should be responsible for the rising levels of carbon dioxide.

是 否

A、A happens first B、B happens first C、A and B happen at approximately the same time D、Not given