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【单选题】
执行下列后，输出的结果是 For k1=0 To 4 y=20 For k2=0 To 3 y=10 For k3=0 To 2 y=y+10 Next k3 Next k2 Next k1 Print yA.
90
B.
60
C.
40
D.
10
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【单选题】The science of wildlife management is actually quite new. It is the third major phase of the original conservation movement. The first phase involved the preservation of wildlife through laws and hunt...
A.
the history of the wildlife conservation movement
B.
the preservation of wildlife through laws
C.
wildlife management as a new approach
D.
protection and improvement of the habitat of animals
【单选题】混凝土结构工程按冬期施工要求组织施工的前提是:根据当地多年气温资料,室外日平均气温连续稳定低于5C°的天数为( )
A.
3 天
B.
5 天
C.
7 天
D.
10 天
【简答题】设只包含根结点的二叉树的高度为0，则高度为k的二叉树的最小结点数为【 】。
【单选题】混凝土结构工程按冬期施工要求组织施工的前提是:根据当地多年气温资料,室外日平均气温连续5天稳定低于( )
A.
-2°C 时
B.
0°C 时
C.
5°C 时
D.
10°C 时
【单选题】乒乓球球台的上层表面叫做比赛台面,是与水平面平行的长方形,长 68.5px,宽3812.5px,离地面高（ ）。
A.
75cm
B.
76cm
C.
78cm
D.
86cm
【单选题】The science of wildlife management is actually quite new. It is the third major phase of the original conservation movement. The first phase involved the preservation of wildlife through laws and hunt...
A.
the history of the wildlife conservation movemen
B.
the preservation of wildlife through laws
C.
wildlife management as a new approach
D.
protection and improvement of the habitat of animals
【单选题】下列关于氙气大灯的说法错误的是（）
A.
氙灯和传统的灯具一样有灯丝
B.
氙灯的色温与太阳光相似
C.
氙灯一旦发生故障不会瞬间熄灭，而是通过逐渐变暗的方式熄灭
D.
氙灯亮度比卤素灯高很多
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