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【判断题】
斜坡坡度在20°～35°最利于滑坡的发生
A.
正确
B.
错误
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【单选题】The Exploding Lakes of Cameroon What comes to mind when youthink of a lake? You probably imagine a pretty scene with bue water, brds, and fish. FOr the people in the northwestern Cameroon, however,the...
A.
Water will flow down the hills.
B.
Poisonous gases will bereleased suddenly.
C.
A strong wind will rise from the lakes.
D.
The volcanoes will come to life.
【单选题】有一长为1公里的斜坡，它的倾斜角为20°，现要将倾斜角改为10°，则坡底要伸长（ ）
A.
1公里
B.
sin10°公里
C.
cos10°公里
D.
cos20°公里
【单选题】变压器气体继电器联管在储油柜端稍高，朝储油柜方向有（ ）升高坡度。
A.
0.5%～1%
B.
1%～1.5%
C.
1.5%～2%
D.
2%～4%
相关题目：
【单选题】The Exploding Lakes of Cameroon What comes to mind when youthink of a lake? You probably imagine a pretty scene with bue water, brds, and fish. FOr the people in the northwestern Cameroon, however,the...
A.
Water will flow down the hills.
B.
Poisonous gases will bereleased suddenly.
C.
A strong wind will rise from the lakes.
D.
The volcanoes will come to life.
【单选题】有一长为1公里的斜坡，它的倾斜角为20°，现要将倾斜角改为10°，则坡底要伸长（ ）
A.
1公里
B.
sin10°公里
C.
cos10°公里
D.
cos20°公里
【单选题】变压器气体继电器联管在储油柜端稍高，朝储油柜方向有（ ）升高坡度。
A.
0.5%～1%
B.
1%～1.5%
C.
1.5%～2%
D.
2%～4%
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