压力容器一般事故是指容器由于受压部件严重损坏(如变形、泄漏)、附件损坏等，被迫停止运行，必须进行修理的事故。
参考答案：错
When you read the sailing directions, you should notice that this is one of a series of publications produced by the（）which should be consulted by users of Admiralty Charts.
A.UK Hydrographic Office
B.IMO
C.International Hydrographic Organization
D.International Association of Classification society
通常称为社会效益的是( )。
A．正面影响
B．负面影响
C．适应性
D．不适应性
