佝偻病极期的主要临床表现是（）

下列抗肿瘤药物中主要作用于M期的药物有（）

最早的海洋抗肿瘤活性物质发现于贝类动物中，（）是第一个进入临床试验的抗癌海洋药物。

IgA肾病(IgA nepheopathy or Berger’s disease)

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。

OR指令的作用是: 。( )

I期临床试验是初步的临床药理学及人体安全性评价。试验对象主要为健康受试者，样本数一般只有（）

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。