对降放装置进行全面检修并做必要实验的时间周期是()。 A.不超过1年的时间间隔 B.

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问题:

对降放装置进行全面检修并做必要实验的时间周期是()。

A.不超过1年的时间间隔

B.不超过3年的时间间隔

C.不超过5年的时间间隔

考点:船员基本安全培训考试在救生艇筏上的求生活动在救生艇筏上的求生活动题库
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As summer vacation is come soon, my classmates are trying very hardly to get train tickets to go home. But I have made up my minds to spend the vacation far from home for first time in my life. My parents have agreed to visiting me, and I will have a different vacation. When they come here, I will show they around my university and the city as well as. I have decided to buy them some nice gifts. It will be a big surprise for them. My parents had done a lot for me, and I think it is high time that I did anything special to express their thanks.

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水痘的主要传播途径是()

A.直接接触与呼吸道传播

B.粪口传播

C.性接触传播

D.虫媒传播

E.动物源性传播

题型:单项选择题

研究表明,高纤维食物对于预防心脏病、直肠癌和糖尿病有重要的作用。但是,目前食品包袋上没有把纤维素的含量和其他营养成分一起列出。因此,国家应该规定在食品包装袋上明确列出纤维素的含量,这对于保护民众健康具有重大意义。以下哪项如果是真的,将最有力地削弱上述结论?()

A.绝大多数消费者购买食品时并不注意包装袋上关于营养成分的说明

B.不但高纤维食品,而且低脂肪食品对于预防心脏病、直肠癌和糖尿病也有重要作用

C.多食用高纤维食品并不能保证不患心脏病、直肠癌和糖尿病

D.高纤维食品,一般蛋白质的含量不够丰富

题型:单项选择题

读图,回答以下问题。

条件同上题,下列叙述正确的是()

A.自转线速度甲地大于乙地

B.自转角速度甲地小于乙地

C.甲、乙两地地方时相差11小时

D.12月22日白昼时间甲地大于乙地

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If you leave a loaded weapon lying around, it is bound to go off sooner or later. Snow-covered northern Europe heard the gunshot loud and clear when Russia cut supplies to Ukraine this week as part of a row about money and power, the two eternal battlegrounds of global energy. From central Europe right across to France on the Atlantic seaboard, gas supplies fell by more than one-third. For years Europeans had been telling themselves that a cold-war enemy which had supplied them without fail could still be depended on now it was an ally ( of sorts). Suddenly, nobody was quite so sure.

Fearing the threat to its reputation as a supplier, Russia rapidly restored the gas and settled its differences with Ukraine. But it was an uncomfortable glimpse of the dangers for a continent that imports roughly half its gas and that Gérard Mestrallet, boss of Suez, a French water and power company, expects to be importing 80% of its gas by 2030--much of it from Russia. It was scarcely more welcome for America, which condemned Russia’s tactics. And no wonder: it consumes one-quarter of the world’s oil, but produces only 3% of the stuff. Over the coming years, the world’s dependence on oil looks likely to concentrate on the Middle East, particularly Saudi Arabia. Russian oil had seemed a useful alternative.

Fear of the energy weapon has a long history. When producers had the upper hand in the oil embargo of 1973-74, Arab members of the Organisation of the Petroleum Exporting Countries (OPEC) cut supply, sowing turmoil and a global recession. When consumers had the upper hand in the early 1990s, the embargo cut the other way. After Saddam Hussein invaded Kuwait in 1990, the world shut in 5m barrels a day (b/d) of production from the two countries in an attempt to force him out. With oil costing $ 60 a barrel, five times more than the nominal price in 1999, and spot prices for natural gas in some European and American markets at or near record levels, power has swung back to the producers for the first time since the early 1980s. Nobody knows how long today’s tight markets will last. "It took us a long time to get there and it will take us a long time to get back," says Robin West, chairman of PFC Energy in Washington. A clutch of alarmist books with titles such as "The Death of Oil" predict that so little oil is left in the ground that producers will always have pricing power. The question is how worried consumers should be. What are the threats to energy security and what should the world do about them The answers suggest a need for planning and a certain amount of grim realism, but not for outright panic.

Based on the remarks made by Robin West, the current situation will()

A.vanish

B.linger

C.aggravate

D.rebound

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