听力原文:M: So, what exactly are you doing to protect the elephants here?
W: Well, we have managed to raise a lot of money for this project. A lot of it is being used to compensate farmers for the damage that elephants do to their crops.
M: How does that protect the elephants?
W: Since the elephants cause damage to the crops, farmers are often tempted to go out and kill the elephants.
M: I see. So, the farmers don't have a real problem with the elephants until the elephants start eating the crops. But why do the elephants do that?
W: Well, there aren't enough trees to provide them with food on the land that has been reserved for them.
M: Mm. But if you successfully protect the elephants, their numbers will grow and they will need more food. That means that 'they'll need more land.
W: That's true, but we've solved that problem too. What we do is move some elephants to reservations where there are relatively few.
M: So that's where you spend another large proportion of the money you raise.
W: Actually, it isn't very expensive because we share the cost with the people who run the other reservations.
M: I see. How do you decide which elephants to move?
W: We use two criteria. The first is that we maintain the genetic diversity of the elephant herd. The- second is that we transport the more aggressive members of the herd, which results in us spending less money compensating farmers.
M: Are there any plans to expand the reservation?
W: We have allocated some money to land purchases, but such purchases could have a detrimental effect on the local human population, so we rarely do it.
M: What kinds of research are you doing on the elephants here?
W: We're mainly studying the way that elephants interact with each other within a herd.
M: I see. Well, thanks very much for your time.
W: My pleasure.
(20)
A.Water.
B.Crops.
C.Money.
D.Trees.
第3题
油气分离器进油后,当平衡杆水平时,打开分离器出油阀门,用出口气阀门调节分离器压力到()MPa。
A.0.1-0.15
B.0.15-0.25
C.0.25-0.35
D.0.35-0.4
第6题
使用分离器量油时依次打开()闸门,再缓慢打开井口生产闸门,使油气通过分离器正常生产。
A.放空闸门、出油闸门、进油闸门,关闭捷道闸门
B.进油闸门、出油闸门、放空闸门,关闭捷道闸门
C.出油闸门、进油闸门、捷道闸门,关闭放空闸门
D.捷道闸门、放空闸门、进油闸门,关闭出油闸门
第7题
A、关死气平衡闸门,打开分离器出油闸门
B、关死气平衡闸门,关死分离器出油闸门
C、打开气平衡闸门,打开分离器出油闸门
D、打开气平衡闸门,关死分离器出油闸门
第8题
保持油气分离器压力稳定的手动调节方法是人工调节()阀门。
A.出油
B.进油
C.排污
D.天然气
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