不定项选择

力可沿其作用线从一个刚体滑移到另一个刚体上去，作用效应不变。

A．正确
B．错误

你可能感兴趣的试题

单项选择题

患者男,35岁,因“头部外伤”急诊入院。浅昏迷,CT提示颅内血肿,脑挫裂伤,行全血肿清除术。患者术后返回病房,正确的体位是: A.
侧卧位 B.
去枕仰卧位,头偏向一侧 C.
头高足低位 D.
头低足高位 E.
中凹卧位

单项选择题

Question 4: What can we infer from the text?
A、Entrepreneurs are great leaders.
B、Entrepreneurs are great leaders.
C、It is hard for an entrepreneur to give the management to a professional.
D、Transition from an entrepreneur to a manager is a natural course.