花椒,落叶灌木或小乔木,多刺,喜光,耐寒,耐旱,果实需人工采

花椒,落叶灌木或小乔木,多刺,喜光,耐寒,耐旱,果实需人工采摘,可用作调料、药材。武都(位置见图2)素有“千年椒乡”之称,古书有“蜀椒出武都”的记载。

29.与四川盆地相比,武都生产花椒的气候条件优越的主要原因有(   

①纬度较高          ②海拔较高

③位于夏季风迎风坡  ④年温差较小

A.①②       B.②③

C.③④       D.①④

30.目前,武都花椒生产成本不断攀升的主要

原因是(   

A.交通不便

B.人力成本上升

C.土质退化

D.种植面积扩大

答案

AB

相关题目

我国雅砻江水电开发受季节影响较大,针对“丰枯不均”的
我国雅砻江水电开发受季节影响较大,针对“丰枯不均”的现象,开发时应注意 A.统一管理,科学调度                         B. 疏浚河道
There are two types of people in the world. Although they have equal degree of
There are two types of people in the world. Although they have equal degree of health and wealth and other comforts of life, one becomes happy and the other becomes unhappy. This arises from the d
In 1971, Arthur P. Mullaney, of Randolph, Massachusetts, came up with a great id
In 1971, Arthur P. Mullaney, of Randolph, Massachusetts, came up with a great idea. He asked his neighbors to give up cigarettes for a day and donate the money they would have spent for cigarettes to
将0.0000025用科学记数法表示为 A.2.5×10-5            
将0.0000025用科学记数法表示为 A.2.5×10-5                B.2.5×10-6                C.0.25×10-5              D.0.25×10-6
在杨氏双缝干涉实验装置的双缝后面各放置一个偏振片,若
在杨氏双缝干涉实验装置的双缝后面各放置一个偏振片,若两个偏振片的透振方向相互垂直,则(    )A.光屏上仍有干涉条纹,但亮条纹的亮度减小B.
有关原电池的下列说法中正确的是( ) A.在外电路中电子由
有关原电池的下列说法中正确的是( ) A.在外电路中电子由正极流向负极 B.在原电池中负极发生还原反应 C.原电池工作时,阳离子向正极方向移动 D
Shopping is a game with two teams—shoppers and retails (零售商). Here is t
Shopping is a game with two teams—shoppers and retails (零售商). Here is the game plan you need. Bargains and Impulse (冲动) Shopping Limit the number of stores you go to. The more “legwork
(9分)滑雪者从高坡雪道上的A点由静止自由滑下,雪道的BC
(9分)滑雪者从高坡雪道上的A点由静止自由滑下,雪道的BC段为水平,CE段为倾角为37°的斜坡,滑雪者滑下从C点水平飞出后落在斜坡上。已知斜坡上C

最新题目