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听录音,补全段落 My name is Colin. I ____1______ for Ford in China. I received a ____2_____ today, he wanted to know something about Ford ____3____. I told him Lincoln Navigator was sort of merchandise in many ___4____. Navigator series has its settled fans and it is the ____5___ large-sized ____6___ with 6-speed automatic ____7_____. The _____8__ generation of Jaguar has just come on the ___9______. Land Rover broke the ____10___ record in September.

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力的外效应使物体产生变形。

A. 对
B. 错

平衡是指物体相对于地面保持( )状态。

A. 匀加速运动
B. 静止或匀速直线运动
C. 匀减速运动
D. 不确定运动

只受两个力作用而平衡的构件,称为。

作用力与反作用力实际就是一对平衡力。

A. 对
B. 错

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