题目内容

Robot runes deep into the various fields: industrial and agricultural, the service zone relief, and ().

A. military
B. aerospace
C. education
D. social entertainment

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the earliest record of the robot in the world is () years old.

在做装备的时候插入一个新的零件还没有对它添加任何约束之前，它总共有（）个自由度。

A. 3
B. 4
C. 5
D. 6

2.在进行装配时，应尽量从装配原点开始装配（）

A. 对
B. 错

Listen to five dialogues and choose the answer according to the question.

A. Haveaholiday
B. FlytoBeijing.
C. Travelonbusinesswithhim.
D. Preparesomedocuments