单项选择题

关节脱位特有的体征是畸形、弹性固定、关节空虚。( ) A. 对 B. 错

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单项选择题

If the solution node is set at the separator, what’s the character of the inflow curve in nodal analysis graph is:

A.Increasing
B.Decreasing
C.Parallel with cross axle
D.Parallel with vertical axle