Owners are to be responsible for loss of or damage to the goods or delay in delivery of the goods only in case the loss，damage or delay has been caused by the improper or negligent stowage of the goods．This means that（）. Owners are to be responsible for loss or damage even such loss or damage is not caused by the improper stowage。 Owners are only responsible for the loss or damage or delay caused by improper or negligent stowage。 Both A and B are right。 Both A and B are wrong。
写了一本《远东游记》的来华天主教传教士是（）。 柏朗嘉宾。 罗伯鲁。 马可波罗。 孟高维诺。
化学药剂注入泵的理论排量计算公式为（）。 每分钟排量=活塞面积×冲程长度×冲数。 每分钟排量=活塞面积×冲程长度×时间。 每分钟排量=活塞长度×活塞面积×时间。 每分钟排量=活塞长度×冲数。
什么是P/O比？
顶棚吊顶用的木龙骨和角钢的损耗率为（）。 3%。 5%。 6%。 7%。
在自喷井泡流阶段，气泡上升速度大于液体流速，气体超越液体上升的现象称为（）
