公安机关在行使管制权时,人民警察可以采取必要手段强行驱散,并对拒不服从的人员()。

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问题:

公安机关在行使管制权时,人民警察可以采取必要手段强行驱散,并对拒不服从的人员()。

A.强行带离现场

B.强行进行隔离

C.立即予以拘留

D.立即予以逮捕

考点:招警考试公安基础知识公安基础知识题库
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8051的异步通信口为()(单工/半双工/全双工).

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为了增强环境影响评价工作的科学性,既要考虑项目自身的环境问题,又要考虑对环境质量现状的( )问题。

A.负面影响

B.叠加影响

C.进度影响

D.系统影响

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风险就是指损失的大小。()

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Questions 21~25


While other members of my team explored the wreck of a small Greek merchant ship that sank off the Turkish coast more than 2,400 years ago, I hovered above them in a submarine. One diver, an archaeologist, placed an amphora, or two-handled jar, inside a lifting basket. Another vacuumed sediment from the site by fanning sand into the mouth of a nearly vertical pipe. Two more were taking measurements, carefully, but of necessity quickly, for at this depth each diver had only 20 minutes to complete the morning’s assigned task. Any longer, and they would require lengthy medical treatment, to avoid the divers’ ailment known as the bends.
In four decades of diving on shipwrecks, I’ d been too engrossed in carrying out similar tasks to think of the families whose loved ones may have disappeared long ago. I had always concentrated on the technical features of my trade. I had stopped diving regularly 15 years before this exploration, turning over the bulk of the underwater work to a younger generation, but I continue to make inspection dives on most wrecks we excavate.
This was not just any wreck. Although I’ve been involved in uncovering the remains of much older ships, and of more than a hundred ancient shipwrecks along the Turkish coast. I had never even seen a wreck from the fifth century BC. Preliminary photographs of the cargo dated it to the third quarter of the century, during the Golden Age of classical Greece. Athens, then as now the major city in Greece, controlled an empire stretching from one side of the Aegean Sea to the other. None of this would have been possible without naval might and maritime commerce.
During our three-year exploration of the wreck we excavated examples of nearly every type of jar that the classical Greeks made for wine or water. Many types might have been used as tableware by the ship’s crew, but they were far in excess of what would have been required. We concluded therefore that they must have been cargo. We also discovered in the seabed two marble discs, which we guessed were the ship’s eyes. It has long been known from vase paintings that classical Greek ships—like those from other cultures—had eyes to give them life or help them see their way through the waves. Although warships were known to have had naturalistic marble eyes attached to them, most scholars assumed that the eyes on more modest merchant ships were depicted as simple circles painted onto the sides of the vessel.
Did the sailors who depended on these eyes for safety survive the ship’s last voyage They could have lived through the actual sinking. The ship was less than a hundred yards from land when it sank, so they might have swum towards the shore. And we know from Greek literature that some ships had lifeboats. But proximity to land and having lifeboats are no guarantee of safety. Even if some had swum to shore, it’s hard to imagine that many managed to crawl up on the exposed and sharp rocks while being smashed by waves like those that almost certainly sank their ship.

Which of the following is TRUE about the ship’s eyes that were found

A. It had been thought that eyes like these were only used on warships.
B. They were different from the eyes on ships in vase paintings.
C. It was unusual for eyes to be placed in this position on a ship.
D. They were surprisingly similar to eyes on ships from other cultures.

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造成离心泵滑动轴承过热的原因是()。

A.轴封填料过紧

B.润滑油量不足

C.进泵压力过低

D.密封端面磨损

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