单项选择题

UG虚拟装配是指利用部件链接关系建立装配，装配体与组件是一种引用关系。所以，装配的所有文件没必要在同一个文件夹中。（）

A．对
B．错

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单项选择题

针刺镇痛基础上，发展起来的针刺麻醉方法，用于外科手术获得成功，这是我国西医医学与现代麻醉医学相结合的产物。 ( )

A．对
B．错

单项选择题

Which of the following narrations on activities is correct? A.
Classroom activities can be whatever you want. B.
Classroom activities must be single. C.
Classroom activities should be carried out around the realization of teaching objectives. D.
Classroom activities waste classroom time.