阅读材料,结合玉米种植的有关知识,回答问题. 玉米是我国北方地区的主要粮食作物,

题型:解答题

问题:

阅读材料,结合玉米种植的有关知识,回答问题.

玉米是我国北方地区的主要粮食作物,也是饲料生产的重要原料,近年来,美国等玉米生产大国,还大量使用玉米生产乙醇(酒精),作为辅助燃料,以应对能源的短缺.

(1)玉米是一年生植物,长成以后,茎就不再加粗,原因是______.

(2)阴雨连绵的天气会影响玉米的传粉,造成玉米果穗大量缺粒减产,此时,人们通常采取的弥补措施是______.

(3)农民常把玉米和大豆间作套种(即在每两行玉米之间种植几陇大豆),这样可以增强土壤的肥效,提高土地的生产效益.其原因是______.

(4)用玉米生产乙醇,主要是因为其种子内含有丰富的淀粉,请你设计一个简单的实验来验证玉米粒内淀粉的存在:______.

考点:传粉和受精
题型:解答题

焊接性能

题型:解答题

热渐盛而津渐伤的舌象表现是()

A.舌光无苔

B.舌苔由白转黄

C.舌苔由润变燥

D.舌苔由厚变薄

E.舌苔焦黑起裂

题型:解答题

局部晚期NSCLC的姑息性照射剂量为()

A.50~60Gy

B.40~50Gy

C.20~30Gy

D.30~40Gy

E.60~70Gy

题型:解答题

The International Whaling Commission’s (IWC) decision to retain its ban on whaling does not mean that the killings will stop. Quite the (1) .

Save the Whale. It’s a phrase which became annoying with (2) , an unfavorable shorthand for liberal consciences. How appalling, then, that in the year 2010, it should be pressed (3) service again, to fight the whaling nations: Norway and Iceland, who exempted themselves from the 1986 prohibition (4) by the IWC, and Japan, which hunts whales under cover of " (5) research".

I am completely (6) by this week’s events in Morocco, where talks broke down. In my heart, I agree with those who have (7) the news that this year’s negotiations of the IWC have broken up, and (8) the prohibition would not be lifted (as the US proposed in a desperate (9) to break the deadlock). Yet reason (10) something else. If we do not (11) some kind of new control, the (12) will be able to go on with their slaughter (13) . Membership of the IWC is (14) , and the ban was only ever intended to be (15) . Japan, which has been buying the votes of nations with no interest in whaling (only in the 16 Japan offers in turn), will continue to press its case, having invested millions of dollars in its (17) . Geoffrey Palmer, New Zealand’s Commissioner at the IWC, has proposed a year-long (18) period. In the meantime, more whales will die.

We stand at a crossroad for whales. We see the (19) existence of these animals as an indicator of ecological threat. As symbols of an endangered world, they evoke, and provoke, a feeling that they have the same qualities as human on a scale equal to their size and supposed (20) . To some this is so much sentimental words in the New Age.

20()

A.intelligence

B.performance

C.action

D.emotion

题型:解答题

根据《华夏银行银行承兑汇票承兑管理办法》规定,在华夏银行办理银行承兑汇票的客户须满足资信状况良好,()年内无实质性违约记录。

A.一年

B.二年

C.三年

D.四年

更多题库