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【简答题】
使代数式 有意义的x的取值范围是
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【判断题】叉架类零件尺寸基准常选择安装基面、对称平面、孔的中心线和轴线。
A.
正确
B.
错误
【单选题】叉架类零件尺寸基准常选择安装基面、对称平面、孔的( )
A.
内外直径面
B.
各个轴肩面
C.
中心线和轴线
D.
安装面和键槽
【单选题】Which type of the arteries is firstly insulted in the beginning of hypertension?
A.
Arterioles
B.
Medium-sized arteries
C.
Large-sized arteries
D.
All the arteries above
【单选题】()零件尺寸基准常选择安装基面、对称平面、孔的中心线和轴线。
A.
轴套类
B.
盘盖类
C.
叉架类
D.
箱壳类
【单选题】叉架类零件尺寸基准常选择安装基面、对称平面、孔的()。
A.
中心线和轴线
B.
内外直径面
C.
各个轴肩面
D.
安装面和键槽
【单选题】Let's __________ the letter. [     ]
A.
 see
B.
 watch
C.
 read
【单选题】Let's go to the _____________ to read a book! [     ]
A.
park
B.
supermarket
C.
library
【单选题】Which type of the arteries is firstly insulted in the beginning of hypertension?
A.
Arterioles
B.
Medium-sized arteries
C.
Large-sized arteries
D.
All the arteries above
E.
Veins
【单选题】Permissive parents would ______.
A.
let their children read any books they like to
B.
not let their children see any films they like to
C.
not let their children read any books without first checking their contents
D.
let their children see the films with their first checking
【单选题】--- It’s so hot today. Why not stay at home and read books? --- ___________! Let’s read the novel Twilight.
A.
That’s Ok.
B.
Good luck
C.
Of course not
D.
Good idea
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