问题 单项选择题

某施工单位中标承包了某城市排水工程。该承包单位对该城市排水工程的管道顶进采用普通顶管法施工,在施工过程中的部分工作方法和施工工艺是:
(1)为了便于工作坑内材料和机械的垂直运输,在顶管现场设置吊装设备;
(2)采用手掘式顶管时,工具管接触或切入土层后,自上而下分层开挖;
(3)全段顶完后,在每个管接口处测量其轴线其轴线位置和高程;
(4)在顶进过程中,以高压泵向管外壁与土层之间注入触变泥浆,以减少阻力。

采用顶管法施工,千斤顶应左右对称布置,顶力的合力位置应该和顶进抗力的位置在( )。

A.同一轴线上

B.管道中心的垂线上

C.与管道是平行的平行线上

D.与施工地面垂直的垂直线上

答案

参考答案:A

问答题 案例分析题
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.

The views of Michael Tenet and George Frank on globalization are()

A. identical

B. similar

C.complementary

D. opposite