（）的作用是确保员工的思想意识与外部经营环境保持同步。
A、内部沟通
B、外部沟通
C、制定计划
D、培训和发展计划
参考答案：B
压力表试验的轻敲位移不超过基本误差绝对值的（）%。
A、50
B、40
C、30
D、20
If Greeks and Turks had not helped each other after the earthquakes five years ago,they____ mortal enemies instead of friendly neighbors later on..
A．would have been
B．might be
C．should have been
D．must have been
