S-腺苷甲硫氨酸的重要作用是（）

IgA肾病(IgA nepheopathy or Berger’s disease)

肝性脑病患者使用精氨酸的目的是（）

If he is a common carrier，he is absolutely responsible to the owner of the goods carried （）any loss or damage to them unless caused by an Act of God or the Queen’s enemies，or the inherent vice in the goods themselves，or the negligence of the owner of the goods，or a general average sacrifice.

During loading or discharging，where the delay is due to the Shipowner’s fault，or that of his servants or agents acting within their authority，the time actually delayed is to be（）in calculating lay days.

I don’t know（）there’s any shortage or not.

简述布尔算符（OR）的作用。

活性甲硫氨酸的形式是（），其英文缩写是（）。

OR指令的作用是: 。( )

谷氨酸在蛋白质代谢作用中具有重要作用，因为（）

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。