问题 多项选择题

下列关于地类调查的说法正确的有( )。

A.地类调查应当在土地利用现状调查的基础上进行

B.按照《土地利用现状调查技术规程》及《全国土地分类(试行)》的要求进行

C.以接受勘测定界委托时为调查时点

D.在地类调查的同时,实地调绘农用地和建设用地范围界线

E.通过现场调查及实地判读,将用地范围内及其附近的各地类界线测绘或转绘在工作底图上,并标注三级地类编号

答案

参考答案:A,B,C,D

解析: E项,在地类调查的同时,要将基本农田的位置、范围等标绘在土地勘测定界图上,首先要向划定基本农田的部门收集标绘有基本农田位置、范围的图件资料,将收集的资料与土地勘测定界图套合、调整,经基本农田划定部门认可后,确定为占用基本农田数据;而农用地转用范围线在土地利用总体规划确定的城市和村庄、集镇建设用地规模范围内。

单项选择题 A1/A2型题
单项选择题

The sun today is a yellow dwarf star. It is fueled by thermonuclear reactions near its center that convert hydrogen to helium. The sun has existed in its present state for about 4 billion, 600 million years and is thousands of times larger than the Earth.
By studying other stars, astronomers can predict what the rest of the sun’s life will be like. About 5 billion years from now, the core of the sun will shrink and become hotter. The surface temperature will fail. The higher temperature of the center will increase the rate of thermonuclear reactions. The outer regions of the sun will expand approximately 35 million miles, about the distance to mercury, which is the closest planet to the sun. The sun will then be a red giant star. Temperatures on the earth will become too hot for life to exist.
Once the sun has used up its thermonuclear energy as a red giant, it will begin to shrink. After it shrinks to the size of the earth, it will become a white dwarf star. The sun may throw off huge amounts of gases in violent eruptions called nova explosions as it changes from a red giant to a white dwarf.
After billions of years as a white dwarf, the Sun will have used up all its fuel and will have lost its heat. Such a star is called a black dwarf. After the Sun has become a black dwarf, the earth will be dark and cold. If any atmosphere remains there, it will have frozen onto the earth’s surface.

As a white dwarf, the sun will be ______ .

A.the same size as the planet Mercury
B.thousands of times smaller than it is today
C.around 35 million miles in diameter
D.cold and dark