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I'm a little sad 1 Mother's Day because my mother isn't with me. She is 400 kilometers away. I call her and say happy Mother's Day to 2 .She sounds happy and I tell her the story about lilacs(紫丁香). Lilacs are beautiful. I want 3 to make my room more beautiful. I know where I can find them. So, together with my friends, I drive to a small hill. I run quickly to enjoy the flowers as soon as I 4 my car. I pick some lilacs carefully. On my way home I feel very happy. When we 5 past a house, I see an old woman 6 on a chair in front of it. She 7 sad.I stop my car, get out of it and walk to her. I 8 my flowers in her hands. The old woman thanks again and again. She is so happy! When I go back to my car, one of my friends asks me," 9 is the old woman?" Why do you give our flowers to her?" "I don't know her," I tell her, " 10 it's Mother's Day today, and she has no children with her. Just think how much those flowers mean to her."
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【简答题】直流电动机是将电能转换成 能 。
【判断题】台湾澎湖水晶的储量、产量和质量均位居全国第一,素有“水晶之乡”“水晶王国”之称。( )
A.
正确
B.
错误
【判断题】直流电动机是将直流电能转换成机械能而带动生产机械运转的。 ( )
A.
正确
B.
错误
【单选题】产生焊接残余应力的主要因素之一是( )。
A.
钢材的塑性太低
B.
钢材的弹性模量太高
C.
焊接时热量分别不均
D.
焊缝的厚度太小
【单选题】直流电动机是将( )转换成机械能。
A.
电能
B.
机械能
【简答题】直流电动机是将电能转换成 的设备
【判断题】直流电动机是一种将直流电能转换成机械能的装置
A.
正确
B.
错误
【单选题】水晶储量、产量和质量均位居全国第一,素有 “水晶之乡”、“水晶王国”之称的地方是( )。
A.
江苏东海
B.
河南南阳
C.
台湾澎湖
D.
辽宁锦州
【判断题】直流电动机是指能将直流电能转换成机械能或将机械能转换成直流电能的旋转电机。
A.
正确
B.
错误
【多选题】以下关于黄河类型的园林措述正确的是( )
A.
建筑富丽堂皇
B.
景致细腻精美
C.
河湖、园石较多
D.
以北京为代表过小
E.
园林风格粗犷
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