煤泥处理间带式压滤机中心线偏差应小于()mm。
A.10
B.20
C.30
参考答案:A
The opening between the rocks was very narrow, but the boys managed to _______ through.
A.press
B.squeeze
C.stretch
D.leap
下类哪种类型属于Flash中的符号(也称为元件)()。
A、图形
B、按钮
C、音频
D、影片剪辑