用齿轮卡尺在标准齿轮分度圆圆周上测出的是（）.
A.齿厚s
B.分度圆弦齿厚
C.固定弦齿厚
参考答案：B
It is reported that the bridge ______ last year has been damaged in a terrible flood.
A．having been completed
B．to be completed
C．completing
D．completed
在企业价值评估中，应按( )界定企业评估的具体范围。
A．稳健原则
B．独立原则
C．预期原则
D．效用原则
