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【单选题】
水土流失受自然因素、人为因素或他们共同的影响。自然因素主要有气候、地形、土壤、植被。人为因素则主要包括陡坡开荒、过度放牧、毁坏植被以及不合理的农田耕作方式等。主要决定因素为 ________ 。A.
、气候
B.
、地形
C.
、土壤
D.
、人为因素
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【单选题】关Fres/raw目录说法正确的是()
A.
这里的文件是原封不动的存储到设备上不会转换为进制的格式
B.
这里的文件是原封不动的存储到设备上会转换为二进制的格式
C.
这里的文件最终以二进制的格式存储到指定的包中
D.
这里的文件最终不会以二进制的格式存储到指定的包中
【单选题】从技术角度上看数据安全的技术特征主要包含哪几个方面()。
A.
数据完整性、数据的方便性、数据的可用性
B.
数据的完整性、数据的保密性、数据的可用性
C.
数据的稳定性、数据的保密性、数据的可用性
D.
数据的方便性、数据的稳定性、数据的完整性
【单选题】According to Paragraph 1, compared with Japanese banks, the foreign ones are
A.
in rich fresh cash.
B.
in rich cash but helpless.
C.
in debt and helpless.
D.
large-sized and bureaucratic.
【单选题】Coastal regions are mentioned as cases where ______.
A.
sea water is less salty because fresh water joins in
B.
rivers carry industrial exhaust into sea
C.
sea ice tend to melt more quickly than in the center of oceans
D.
heavy water sinks to the deeper portions of the oceans
【简答题】完形填空。 The moment happened 30 yours ago but it was still fresh in my memory. I was a college freshman and had 1_ up most of the night before laughing and talking with friends. Now just before my first ...
【单选题】_____at the college are required to take the alcohol information course.
A.
Sophomores
B.
Freshmen
C.
Seniors
D.
Juniors
【单选题】Which of the following is NOT true according to what Voss said on the ASEE program ?
A.
Fresh members from the academic world participate in the program.
B.
The program brings new outlooks to NASA space programs.
C.
It is important for the space scientists to exchange information and perspectives.
D.
American colleges and universities are special property of NASA.
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