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问题 单项选择题

可以从顶标颜色上分出左右岸的内河航标有（）①过河标、沿岸标②侧面标③泛滥标④横流标⑤左右通航标⑥示位标

A、①②③④

B、①②⑤⑥

C、①②④⑤

D、③④⑤⑥

答案

参考答案：A

单项选择题

Government-subsidized insurance available to homeowners makes it feasible for anyone to build a house on a section of coastline regularly struck by hurricanes. Each major storm causes billions of dollars worth of damage in such coastal areas, after which owners who have insurance are able to collect an amount of money sufficient to recoup a high percentage of their losses.
The passage provides the most support for an argument against a government bill proposing

A．that power companies be required to bury power lines in areas of the coastline regularly struck by hurricanes.

B．an increase in funding of weather service programs that provide a hurricane watch and warning system for coastal areas.

C．renewal of federal funding for emergency life-support programs in hurricane-stricken areas.

D．establishment of an agency committed to managing coastal lands in ecologically responsible ways.

E．(E) establishment of a contingency fund protecting owners of uninsured houses in the coastal areas from catastrophic losses due to the hurricane damage.
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单项选择题

混凝土梁板类型不包括以下（）类型

A.T型梁

B.矩形梁

C.箱梁

D.空心板梁
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