常用布尔算符有：and、or、not等，当采用同义词进行检索时应当选用的算符是？

孔板装反，使实际流量系数增大，压差比正装时降低，造成计算气量比实际气量（）。

The （） or balance tank collects the re-circulated fuel oil.

The （） or balance tank collects the re-circulated fuel oil.

Every deliberate act of wrongdoing by the master or any of the crew against the ship or cargo，without the authorization or privity of the Shipowner or his agent，is（）.

（）, or drum is used for hauling in or letting out the wires or ropes which will fasten the ship to the shore.

A salvor may be（）the whole or part of the payment due under Salvage Convention to the extent that the salvage operations have become necessary or more difficult because of fault or neglect on his part or if the salvor has been guilty of fraud or other dishonest conduct.

The（）may examine or re-examine the goods or take samples from them straightaway in the absence of the consignee or the consignor whenever it considers this necessary.

一水箱侧壁接两根相同直径的管道1和2。已知管1的流量为Q1，雷诺数为Re1，管2的流量为Q2，雷诺数为Re2，若Q1/Q2＝2，则Re1/Re2等于（　　）。

流体在管内流动时，当雷诺数Re≤2000时为（）流动，当Re≥2300时，流体流动为（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。