危害性效应的分类。
参考答案:
根据待评物质对机体作用的部位、性质和剂量-反应关系类型,可将危害性效应分为两类:有阈值效应和无阈值效应。
— I heard that there were a lot of shouts and screams at yesterday’s party. It must have been terrible.
— Oh, no. ________, I enjoyed every minute.
A.On the contrary
B.In the end
C.As a result
D.On the other hand
我国《法定规则》中定义的国内航行散装谷物船舶是指()。
A.仅在国内沿海各港口之间航行的散装谷物船舶
B.国际航行船舶在我国港口外部分卸载后进港的散装谷物船舶
C.在我国港口部分卸载后驶往其他国内港口的国际航行散装谷物船舶
D.A、B和C均是