钟面式百分表中盘形弹簧的作用是消除齿轮的啮合间隙所引起的______。
A．误差
B．放大
C．震动
参考答案：A
月子里的营养食物有哪些？
-- ________________?
-- She is of medium height.
A．What does Jenny look like?
B．What does Jenny do?
C．Is Jenny of medium height?
D．What do you think of Jenny?
