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【简答题】
绘制机械图样时,其机件的可见轮廓线用 _ _表示,不可见轮廓线用 表示,轴线、对称中心线用 表示;尺寸线、尺寸界线用 表示。
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皮皮学刷刷变学霸
举一反三
【单选题】What does a house mean in the United States?
A.
It is a dream which many people can hardly realize.
B.
It is so expensive that many people cannot really buy them.
C.
It is the most important property that many people try to buy.
D.
It doesn't belong to people if they can't borrow money from the bank.
【单选题】水资源匮乏是引发中东国家之间矛盾的重要因素，造成水资源短缺的主要原因是 [ ]
A.
气候干旱，降水稀少
B.
污染和战争的严重破坏
C.
人口多，经济发展快
D.
流经多个国家的国际性河流多
【简答题】轮胎规格型号中R表示什么意思？ What does R mean in tyre specifications and models?A. 子午线MeridianB. 半径radiusC. 直径diameter
【单选题】水资源缺乏是引起中东国家之间矛盾的重要因素，那么造成水资源短缺的最主要原因 [ ]
A.
气候干燥、降水少
B.
污染和战争的破坏严重
C.
人口多、经济发展快
D.
流经多个国家的国际性河流多
【单选题】水资源匮乏是引发中东国家之间矛盾的重要因素之一，造成水资源短缺的主要原因是 [ ]
A.
气候干旱，降水稀少
B.
污染和战争的破坏严重
C.
人口多，经济发展快
D.
流经多个国家的国际性河流多
【单选题】1 What does the speaker mean by efficient reading or reading efficiently?
A.
R ead ing a book for pleasure .
B.
W rit ing between lines while reading .
C.
R emember ing the author’s thoughts .
D.
Scanning a book for facts.
【单选题】What does the speaker mean by efficient reading or reading efficiently?
A.
R ead ing a book for pleasure .
B.
W rit ing between lines while reading .
C.
R emember ing the author’s thoughts .
D.
Scanning a book for facts.
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