警戒人员发现隐患，要在发出安全信号前汇报，及时解决。
Hydraulic machinery failures are commonly caused by contamination of the hydraulic fluid and （）. fluid friction。 fluid turbulence。 component misalignment。 pressure surge。
露天掘沟爆破时要保证填塞质量，防止窜炮。
Should it appear that war or blockade would prevent the vessel from safely reaching the port of destination and / or discharging the goods thereat，the Carrier（）. is entitled to discharge the goods at the port of loading or any other safe and convenient place and terminate the contract of carriage。 is not entitled to terminate the contract of carriage。 is not entitled to claim against the shipper or charterer any damage that he will suffer with the cargo on board。 is entitled to claim freight with the cargo on board。
“肥料三要素”是指哪三个？（） 钙。 磷。 钾。 氮。
污泥浓缩罐（T-D13A/B/C/D）的操作压力为（）。
