问题
选择题
在等高线地形图上,等高线闭合,且中间高四周低,我们可以断定该地地处的地形为
A.山地
B.盆地
C.鞍部
D.山谷
答案
答案:A
题目分析:等高线地形图上,等高线闭合,且中间高四周低,为山地,中间低四周高为盆地;两个山峰之间的平缓地带称为鞍部,等高线凸向高处的为山谷,所以,本题选A。
在等高线地形图上,等高线闭合,且中间高四周低,我们可以断定该地地处的地形为
A.山地
B.盆地
C.鞍部
D.山谷
答案:A
题目分析:等高线地形图上,等高线闭合,且中间高四周低,为山地,中间低四周高为盆地;两个山峰之间的平缓地带称为鞍部,等高线凸向高处的为山谷,所以,本题选A。
32.Communicating via E-mail is by far the most common Internet activity. You can (1) with anyone in the world who has an Internet address or E-mail (2) with a system connection to the Internet. All you need is (3) the Internet and an E-mail program Two of the most widely used E-mail programs are Microsoft’s (4) and Netscape’s Navigator. A typical E-mail message has three basic (5) :header, message, and signature. |
(5)
A.packets
B.elements
C.frames
D.cells