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【单选题】
排气管“放炮”的主要原因有（）A.
点火时间过早
B.
发动机过冷
C.
点火时间迟滞
D.
混合气过浓
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【简答题】读图，完成下列问题． （1）地球表层可分为______大板块；几乎全部位于海洋的板块是______板块． （2）②海域是由于板块______（张裂拉伸、碰撞挤压）形成的；①处山脉是由于板块______（张裂拉伸、碰撞挤压）形成的；根据板块的运动方向判断，地中海的面积将不断______．（扩大、缩小） （3）板块______或______的地带，火山和地震活动频繁．中国东部的省多地震是因为位于_...
【单选题】下列说法中错误的是( )。
A.
采用活动地板下送风时,楼板应采用保温措施
B.
主机房不宜采用采暖散热器
C.
电子计算机机房要求空调的房间宜集中布置
D.
电子计算机机房的风管可自由穿过防火墙和变形缝
【简答题】（18分）读“钓鱼诸岛组成”图和“位置”图及相关材料，回答下列有关问题。 材料一：列岛位于东经123°20′—124°45′，北纬25°44′—26°00′之间的海域中，地处省东北，距基隆港约92海里，由、黄尾屿、赤尾屿、南小岛、北小岛及三个小岛礁（大南小岛、大北小岛和飞瀬岛）等8个无人岛礁组成，陆地总面积约6.5平方公里，属于东海海域的一部分。其中，面积最大，面积4....
【简答题】Ann’s grandpa was very rich and he had some shops. The old man began to learn drawing(绘画) when he was sixty, and he loved it very much. For twelve years he drew（画画）a lot and there were many pictures ...
【简答题】阅读理解 Kate's grandpa was very rich and had some shops. The old man began to learn drawing when he was sixty, and he loved it very much. For twelve years he drew a lot and there were many pictures in hi...
【简答题】阅读理解。 Ann's grandpa was very rich and he had some shops. The old man began to learn drawing when he was sixty, and he loved it very much. For twelve years he drew a lot and there were many pictures in...
【简答题】阅读理解。 Ann's grandpa was very rich and he had some shops. The old man began to learn drawing when he was sixty, and he loved it very much. For twelve years he drew a lot and there were many pictures in...
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