刮板链掉链的原因可能是链轮磨损过限或咬进杂物。（）
参考答案：对
不论估价报告提供给谁使用，委托人都应对向估价机构提供的资料的( )负责。
A．合法性
B．真实性
C．准确性
D．完整性
E．排他性
Products which are made from dirts and are ______ high temperatures are known as ceramics.
A．tempered in
B．subjected to
C．exposed to
D．baked in
