合成培养基是由已知化学成分及数量的化学药品配制成。

翻译：With Average or With Particular Average（WA or WPA）（）

已知某企业的生产函数为Q=50L^（3/5）K^（3/5）（Q为产量，L为劳动，K为资本），则（）

已知X=21，Y=15，Z=22，计算表达式（（X>Y）or（Y>Z））and（（X<><>

输出继电器（OR）通过一对（）触点将PLC的控制信号传递给负载。

可以在（）阶段采用Make-or-buy决策分析。

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.

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。

将50mL0.10mol/LNH3•H2O（已知Kb=1.75×10-5）溶液和20mL0.10mol/LHCl混合后，稀释至100mL，溶液的（）。