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【单选题】
Which of the following is a reason that little progress has been made toward the ambitious goals set at the 1992 Earth Summit in Rio de Janeiro?A.
China has shown a strong appetite to adopt tighter pollution controls.
B.
Political cooperation in the U.S. Congress promotes domestic action.
C.
There is a culture of denial in the United States.
D.
Trade liberalization efforts have not been rolled back.
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【单选题】某工程的混凝土及钢筋工程量,本工程为C30混凝土,二级抗震,考虑纵向钢筋锚入端支座的平直段长度为0.4LabE。LabE=33d,Lab=29d.本工程混凝土工程量为()M3
A.
1.56
B.
1.41
C.
1.62
D.
1.94
【简答题】为了描述文件所存放的位置，需指出路径，路径分为绝对路径和相对路径两种，其中绝对路径是指_______的路径。