放射免疫分析中最常用的放射性核素为()
A.130I
B.125I
C.3H
D.14C
E.51Cr
参考答案:B
解析:RIA中最常用的放射性核素为125I。
文学常识与名篇填空。
(1)_________(人名)的作品富有人民性,被称为“俄罗斯生活百科全书”。被前人评价为“文不甚深,言不甚俗”的我国古典名著是《_________》。
(2)故远人不服, ; ,则安之。(《季氏将伐颛臾》)
(3)乐盘游,_________;忧懈怠,_________。(魏征《谏太宗十思书》)
(4)道中迷雾冰滑,磴几不可登,及既上,_________,_________。(姚鼐《登泰山记》)
On a ship,a fire pump may be used for other purposes if().
A.the other services are run off a reducing station with a pressure gage
B.a separate fire pump is available for use on the fire main
C.all other services are operated by a manifold near the pump
D.All of the above