椅靠距离
参考答案：
椅靠背与桌近缘之间的水平距离。应保证胸前有3~5cm的自由距离（穿衣情况下），即胸前后径+衣厚+3~5cm。
In 1995, the CFA Institute sponsored and funded the Global Investment Performance Standards (GIPS) in response to : （）
A. an increase in insider trading.
B. new regulation passed by the SEC.
C. a need to address issues, such as portability of investment results.
数控机床要（）超程时，模式选择开关应放在0.TRELEASE。
A．自动状态
B．手动数据输入
C．回零
D．解除
