问题
单项选择题
在雾中，船舶未鸣放规定的雾号，是属于：（）
A.对遵守《国际海上避碰规则》各条的疏忽
B.对海员通常做法可能要求的任何戒备上的疏忽
C.对特殊情况可能要求的任何戒备上的疏忽
D.视周围是否有他船而定
答案
参考答案：A
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在雾中，船舶未鸣放规定的雾号，是属于：（）
A.对遵守《国际海上避碰规则》各条的疏忽
B.对海员通常做法可能要求的任何戒备上的疏忽
C.对特殊情况可能要求的任何戒备上的疏忽
D.视周围是否有他船而定
参考答案：A
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| The U.S. government has recently helped people learn more about the dangers of earthquakes by publishing a map. This map shows the 1 of an earthquake in each part of the country. The areas of map where earthquakes are 2 likely to break out are called earthquake "belts". The government is working hard to help 3 the answer to these two questions: 1. Can we foretell earthquakes? 2. Can we control earthquakes? To answer the first question, scientists are looking very 4 at the most active fault systems in the country, 5 the San Andress fault in California. A fault is a break between two sections of the earth's 6 . These breaks between sections are the places where earthquakes happen. Scientists look at the faults 7 changes which might show that an earthquake was 8 to happen. But it will probably be many years 9 we can foretell earthquakes accurately (精确地). And the control of earthquake is even 10 away. Nevertheless, there have been some interesting 11 in the field of controlling earthquakes. The most interesting 12 the Rocky Mountain Arsenal earthquakes. Here water was put into a layer of rocks 4,000 meters below the surface of the ground. Shortly after this injection of water, there were a small number of earthquakes. Scientists have 13 that the water that was injected into the rocks worked like oil 14 each other. When the water "oiled" the fault, it became slippery and the 15 of an earthquake was released (释放). Scientists are still 16 at the site of these earthquakes. They have realized that there is a 17 between the injection of the water and the earthquake 18 . They have supposed that it 19 be possible to inject some 20 of fluid like water into faults and change one big earthquake into a number of small, harmless earthquakes. | ||||
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