在频率一定和材料相同情况下,横波对小缺陷探测灵敏度高于纵波,其原因:()。A.横波质

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问题:

在频率一定和材料相同情况下,横波对小缺陷探测灵敏度高于纵波,其原因:()。

A.横波质点振动方向对缺陷反射有利

B.横波探伤杂波少

C.横波波长短

D.横波指向性好

考点:无损探伤工无损探伤工题库
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女性,46岁。盲肠癌行右半结肠切除术,术后第3天出现烦躁不安,尿量减少。查体:T38.8℃,P120次/分,R28次/分,BP90/70mmHg。实验室检查:WBC16×109/L,N92%。加大鼻导管给氧(5L/min)30分钟后,血气检查结果:pH7.45,PaO268mmHg,PaCO230mmHg,[HCO]18mmHg。下列对患者的病情诊断中,不符合的是()

A.盲肠癌右半结肠切除术后

B.SIRS

C.ALI

D.休克代偿期

E.呼吸性酸中毒合并代谢性碱中毒

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从前,某地一妇女先后生下了三个女孩,于是其婆婆责骂其不会生男孩。婆婆的说法科学吗?试用所学的知识,加以解释说明。

题型:单项选择题

混合痔手术选用()。

A.局麻

B.静脉麻醉

C.气管内麻醉

D.蛛网膜下腔麻醉

E.基础麻醉

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公有制经济不仅包括国有经济和集体经济,还包括混合经济中的国有成分和集体成分。( )

题型:单项选择题

The world is undergoing tremendous changes. The rise of globalization, both an economic and cultural trend that has swept throughout the world, has forged new ground as we enter the 21st century. But are the effects of globalization always positive Some say no.

Michael Tenet, head of the International Institute for Foreign Relations in Atlanta, is worried about current resentment throughout the world toward the rise of globalization. "Ever since the 1980s and the economic collapse of the Asian Tigers in the late 1990s, there has been a re-evaluation of the role of globalization as a force for good," he said. "Incomes in many countries has declined and the gap between the most rich and the most poor has been aggravated. Without further intervention by governments, we could see a tragedy expressed in an increased level of poverty throughout the Latin America and Asia. " Yet George Frank, an influential economist who works on Wall Street, sees no such danger. "Economic liberalization, increased transparency and market-based reforms have positive effect in the long run, even if market mechanisms can produce short-term destabilization problems," he said. "What is most important is that barriers to trade continue to fall so that active competition for consumer goods reduces prices and in turn raises the average level of income. "

Others feel that globalization’s cultural impact may be more important than its economic implications. Janice Yawee, a native of Africa, feels ply that globalization is undermining her local culture and language. "Most of the world’s dialects will become extinct under globalization. We’re paving the world with McDonald’s and English slang. It tears me up inside," she said.

Governments of different countries have had mixed responses to the wave of globalization. The United States is generally seen as an active proponent of greater free trade, and it certainly has enormous cultural influence by virtue of its near monopoly on worldwide entertainment. But other countries, most notably in Europe and developing nations, have sought to reduce the impact that globalization has on their domestic affairs.

"When I was a boy we had very little to speak of," says one Singaporean resident. "Now our country has developed into a booming hub for international finance. " Others, however, are not so optimistic. "Globalization is an evil force that must be halted," a union official at a car plant in Detroit recently commented, "It’s sucking away jobs and killing the spirit of our country.

According to paragraph 5, the responses of different countries to globalization may be looked on as()

A. a mixed blessing

B. an active stimulus

C. an evil force

D.intervention in their domestic affairs

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