压力线起阻止股价继续上升的作用。这个起着阻止股价继续上升的价位就是压力线所在的位置。( )
A．正确 B．错误 C．放弃
参考答案：A
A talk on developments in science and technology _______ in the school hall next week. [ ]
A. given
B. will be given
C. has been given
D. gives
浮筒式液面计的校验方法是什么？
