有利于旱区农业实现可持续发展的措施是 ①节约用水②种植生长缓慢、收获期长的作物③

题型:选择题

问题:

有利于旱区农业实现可持续发展的措施是

①节约用水②种植生长缓慢、收获期长的作物③恢复绿色植被覆盖,保持水土④选育抗旱优良品种[ ]

A、①②③

B、②③④

C、①③④

D、②③④

考点:中国的农业
题型:选择题

角用符号______表示,角的计量单位是______,一个角九十度,可计作______.

题型:选择题

表面等离子体生物传感器是光学生物传感器的一种,掌握其检测原理、传感过程及其在医学检验领域中的应用非常重要。

SPR生物传感器的传感过程实际上可以分为两大部分,分别是()

A.生物大分子相互作用对介电物质的影响和光电信号检测

B.SPR的电磁场效应分析和光电信号检测

C.生物大分子相互作用对介电物质的影响和SPR的电磁场效应分析

D.生物大分子相互作用和敏感层介电性质的变化

E.生物大分子相互作用和传感器磁场的变化

题型:选择题

自顶向下规划的重要目标是达到信息的一致性,即保证下列( ),的一致。 Ⅰ.数字字段定义 Ⅱ.数据结构 Ⅲ.更新时间 Ⅳ.更新规划 Ⅴ.数据记录

A.Ⅰ、Ⅱ

B.Ⅰ、Ⅱ、Ⅲ

C.Ⅰ、Ⅲ、Ⅴ

D.全部

题型:选择题

XIANGNING, Shanxi - The number of people trapped underground after a coal mine flooding in north China's Shanxi Province was revised -- for a second time -- to 153 from 123, rescuers said late Sunday night.

Investigations showed that 261 workers were in the pit of Wangjialing Coal Mine under construction when underground water gushed in at about 1:40 pm. Of them, 108 were lifted safely to the ground while 153 others trapped in the shaft, according to the rescue headquarters.

Most of the trapped are migrant workers from Shanxi, Hebei, Hunan and Guizhou provinces," a rescuer said.

The exact number of people trapped is still being checked.

Soon after the accident happened, the Shanxi Provincial Work Safety Administration and the Shanxi Provincial Emergency Affairs Office said 152 people were trapped underground, but officials later changed the figure to 123.

Rescuers are struggling to save the trapped people, and local authorities are investigating the cause of the accident.

President Hu Jintao and Premier Wen Jiabao ordered local authorities to spare no effort to save the trapped while guarding against secondary accidents.

Vice Premier Zhang Dejiang rushed to the site late Sunday to oversee the search and rescue operation.

The mine, sitting astride Xiangning County of Linfen City and Hejin City of Yuncheng City, covers about 180 square kilometers.

The mining zone boasts more than 2.3 billion tonnes of coal reserves, including nearly 1.04 billion tonnes of proved reserves, according to the company's official website.It is now under infrastructure construction and is expected to produce 6 million tonnes of coal annually once put into operation.

The mine, affiliated to the state-owned Huajin Coking Coal Co. Ltd., is a major project approved by the provincial government.

小题1:At least how many people were trapped underground according to the latest report?

A.123

B.153

C.261

D.152小题2:Most of the worked trapped are from __________. Which of the following answers is WRONG?

A.Shanxi

B.Hunan

C.Guizhou

D.Hefei小题3:What’s the cause of this accident?

A.The underground water gushed

B.The coal mine was under construction

C.It is still being investigated by the local authorities

D.The passage does not mention it at all小题4:According to the passage, which of the following statement is right? _________

A. The local authorities fully support the rescue work

B. Vice premier Zhang Dejiang rushed to the site early Sunday to oversee the search

C. The Wangjialing Coal Mine can produce 6 million tonnes of coal each year now

D.The coal mine is a major project approved by the country.

40. What’s the best title of the passage?_________

A. Number of people trapped in China colliery(煤矿) flooding revised to 153

B.The Wangjiajing Coal Mine

C.Rescue work

D. Who are to blame?

题型:选择题

实秘的证机概要是()

A.脾肺气虚,传送无力

B.肝脾气滞,腑气不通

C.阴津不足,肠失濡润

D.邪滞肠胃,壅塞不通

E.阴寒内盛,凝滞胃肠

更多题库