更多"Ocean transportation is widely used"的相关试题:
[单项选择]Ocean transportation is widely used because it is a relatively low-cost way to transport goods, and it can easily handle large shipments（）
A. 人们喜欢在宽阔的海面上运输货物，因为它价格低可以行大船。
B. 海洋运输被广泛使用，因为很容易用大船运送较为低廉的商品。
C. 人们广泛使用，海洋运输，因为它具有运量较大，运费较低的特点。
D. 海洋运输被广泛使用，因为它运量大，虽然花费不低。
[填空题]It became by far the most widely used code because it was the easiest to understand and ______.(传输也最快)
[填空题]
Air Transportation
1 Airplanes are used to carry passengers, cargo and mail. Air transport companies operate scheduled airlines and non-scheduled services over local, regional, national, and international routes. The aircraft operated by these companies range from small single-engine planes to large multiengine jet transports.
2 The first air passenger services began in 1910, when dirigibles began operation between several German cities. The first scheduled airplane service to carry passengers began in the U. S. in 1914. Several experimental airmail flights took place in India. Europe, and the United States before World War Ⅰ, but air transport services did not become a true business until after the war.
3 During World War Two, intercontinental air transport became firmly established. After the war the new long-distance transports with advanced facilities were increasingly able to avoid storms and strong wind and make
[填空题]Basic profiling is a widely used investigating tool, but there are contradictory attitudes towards it.
[单项选择]A chemical widely used in hard plastic drinking bottles and the lining of food cans may reduce the effectiveness of chemotherapy treatment, a new study shows.
The findings, reported in the journal Environmental Health Perspectives, adds to the growing list of concerns about bisphenol-a, or BPA, a chemical used to make the hard, clear and nearly unbreakable plastic called polycarbonate. The plastic is also found in the lining of nearly every soft drink and canned food product.
Most of the concern about BPA has focused on children, who are exposed to the chemical when trace amounts escape from polycarbonate baby bottles and the linings of infant formula cans. The worry is based on data from animal studies. Rat pups exposed to BPA, through injection or food, showed changes in mammary and prostate tissue, suggesting a potential cancer risk. In some tests of female mice, exposure appeared to accelerate puberty.
In the latest research, a team from the University of Cinci
A. To reduce the effectiveness of chemotherapy.
B. To make polycarbonate and linings.
C. To protect ceils from chemotherapy agents.
D. To accelerate puberty.
[简答题]
Lie detectors are widely used in the United States to find out whether a person is telling the truth or not. 61) Polygraphers, the people who operate them, claim that they can establish guilt b v detecting physiological changes that accompany emotional stress. The technique adopted is to ask leading questions such as: "Did you take the money" or "Where did you hide the money", mixed in with neutral questions, and measure the subject’s electrical resistance in the palm or changes in his breathing and heart rate.
Whether lie detectors will ever be adopted on a similar scale in Britain is still a matter of opinion. 62) At first sight, it appears obvious that any simple, reliable method of convicting guilty people is valuable, but recent research not only raises doubts about how lie detectors should be used but also makes it questionable whether they should be employed at all.
63) The point is that, apart from many of the pol
