下面关于APU火警探测系统的说法哪个是错误的()。A.APU探测环为单环路 B.AP

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问题:

下面关于APU火警探测系统的说法哪个是错误的()。

A.APU探测环为单环路

B.APU探测环探测APU的火警和过热信号

C.完成APU火警测试的同时也完成了发动机的火警测试

D.APU探测环探测APU上三个区域的温度

考点:民用航空器维修执照考试B737600700800系列飞机试题B737
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下列叙述不属于动物迁徙的意义的是(  )

A.寻找适宜的生活环境

B.寻找充足的食物

C.有利于进行生殖

D.有利于生物间相互交流

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尽快纠正急性CO中毒组织缺氧的首选方法是()

A.采用高浓度氧气面罩

B.注射呼吸兴奋剂

C.撤离中毒现场

D.人工呼吸

E.高压氧舱

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女性,60岁。口腔干燥、无泪、双眼异物感1年余。两侧腮腺区有反复肿胀史。检查发现:唇黏膜发红,舌表面光滑潮红呈“镜面舌”。口内大多数牙有龋坏,两侧腮腺弥散性肿大,无压痛。挤压腺体导管口唾液溢出很少。

为明确诊断而应做的辅助检查不包括

A.施墨试验

B.四碘四氯荧光素染色

C.腮腺造影

D.血脂检测

E.唇腺活检

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Marriage, and its many ups and downs, still exercises a powerful hold over newspapers, magazines and the airwaves. Nearly 23m Americans watched Prince William being joined in holy marriage to Kate Middleton. Millions more have indulged in the break-up of Arnold Schwarzenegger’s marriage after revelations that he fathered a son with a maid.

Less delightful are revelations about the sorry state of marriage across the United States. Data from the Census Bureau show that married couples, for the first time, now make up less than half of all households.

The iconic American family, with mom, dad and kids under one roof, is fading. In every state the numbers of unmarried couples, childless households and single-person households are growing faster than those comprised of married people with children, finds the 2010 census. And the trend has a potent class dimension. Traditional marriage has evolved from a near-universal ritual to a luxury for the educated and affluent.

There barely was a marriage gap in 1960: only four percentage points separated the wedded ways of college and high-school graduates(76% versus 72%). The gap has since widened to 16 percentage points, according to the Pew Research Centre.

"Marriage has become much more selective, and that’s why the divorce rate has come down," said Bradford Wilcox, director of the National Marriage Project at the University of Virginia in Charlottesville. The project found that divorce rates for couples with college degrees are only a third as high as for those with a high-school degree.

Americans with a high-school degree or less tell researchers they would like to marry, but do not believe they can afford it. Instead, they raise children out of wedlock. Only 6% of children born to college-educated mothers were born outside marriage, according to the National Marriage Project. That compares with 44% of babies born to mothers whose education ended with high school.

"Less marriage means less income and more poverty," reckons Isabel Sawhill, a senior fellow at the Brookings Institution. She and other researchers have linked as much as half of the income inequality in America to changes in family composition: single-parent families (mostly those with a high-school degree or less) are getting poorer while married couples (with educations and dual incomes) are increasingly well-off. "This is a striking gap that is not well understood by the public," she says.

Do not expect the Democratic Party, however, to make an issue of the marriage gap in next year’s elections. Unmarried women voted overwhelmingly for Barack Obama. "You don’t want to suggest to someone who isn’t married and has children that they should be married," says Ms Sawhill. "That is a scorn on their lifestyle.\

According to the text, traditional marriage ().

A.is no longer considered holy and meaningful

B.is doomed to be replaced by new forms

C.tends to be kept by the wealthy and cultivated

D.enables couples to be loyal to each other

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下列骨肉瘤的CT影像特征,错误的是()。

A.松质骨的斑片状缺损和骨皮质内表面的侵蚀

B.骨皮质全层的虫蚀状、斑片状缺损甚至大片的缺损

C.骨质增生表现为松质骨内不规则斑片状高密度影和骨皮质增厚

D.骨瘤分布在骨破坏区和软组织肿块内,密度与平片所见相似

E.软组织肿块常偏于病骨一侧或围绕病骨生长,其边缘大多模糊

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