题目内容

It is essential that these application forms ________ back as soon as possible.

A. will send
B. sent
C. be sent
D. sends

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Thecityhas________ myhometown.

A. twice people as
B. twice as people as
C. twice as many people as
D. people twice

按坐标系统分,工业机器人的主要机械结构有:

A. 直角坐标型
B. 圆柱坐标型
C. 球坐标型
D. 关节坐标型

SCARA意思是有选择顺应性的装配机器人手臂

A. 对
B. 错

一种将串联和并联有机结合起来的机构, 即为混联式机构。

A. 对
B. 错