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【单选题】
刀的角度中对切削力影响最大的因素是车刀的( ).A.
后角
B.
刃倾角
C.
主偏角
D.
前角
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【简答题】一条公路长 2.4 公里,表示在地图上为1.2 厘米,则该图按比例尺大小分类属于( )地图。
【判断题】Ozone depletion and the greenhouse effect are considered as urgent human disasters because they directly threaten human beings, and their consequences cannot easily addressed.
A.
正确
B.
错误
【简答题】Ozone depletion and the greenhouse effect are human disasters,and they are urgent because they directly threaten humanity and are not easily ___________ (可逆转的,可倒转的).
【简答题】unique flora and fauna Maoritanga biodiversity sustainable development integrated management ozone hole ozone depletion mortality address Maori grievance
【简答题】In paragraph 3, one example showing environmental necessity is preserving the atmosphere — stopping ozone depletion and the ________ effect.
【简答题】erousof ozone depletion contain 、 、and .
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