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【单选题】
梯田是第()环境
A.
B.
C.
D.
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皮皮学刷刷变学霸
举一反三
【判断题】犬是一种有社会性的、有等级区分的动物。
A.
正确
B.
错误
【简答题】写出下列元素对应的中文名称:lead ,iron ,nitrogen ,silicon ,chromium 。
【单选题】下列夹具不属于通用夹具的是 。
A.
三爪卡盘
B.
顶尖
C.
波纹套弹性心轴
D.
中心架
【单选题】下列夹具不属于通用夹具的是 。
A.
三爪卡盘
B.
顶尖
C.
液性介质弹性心轴及夹头
D.
中心架
【多选题】Watch the video clip. Choose the ones which are mentioned in this video clip.
A.
It introduces a famous city.
B.
It introduces a famous figure.
C.
It introduces the UN General Assembly.
D.
It introduces a unique police organization.
【单选题】下列夹具不属于通用夹具的是 。
A.
三爪卡盘
B.
顶尖
C.
钻模
D.
中心架
【单选题】Watch the video clip and decide which of the following is not mentioned in the video clip.
A.
E-books are convenient and easy to use.
B.
The conventional bookshop is dead.
C.
According to Amazon UK, downloadable versions of books sell more than hardback and paperback.
D.
The E-book market is developing rapidly.
【单选题】Watch this video clip and anwer the questions. What situation is it in this video clip?
A.
Going to work
B.
Going to work for the first day
C.
An interview
D.
Leaving one's job
【简答题】写出下列元素名称对应的元素符号和中文名称 Hydrogen carbon oxygen nitrogen boron chlorine fluorine iodine sulfur(sulphur) phosphorus calcium potassium copper lead silver iron magnesium manganese gold mercury
【简答题】vt. 使...疲惫; 使...厌烦; vi. 疲劳; 厌烦; n. 轮胎; 头饰;
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