具有支持作用的单臂卡环是
A.Ⅰ杆
B.隙卡
C.钢丝卡臂
D.铸造卡臂
E.对半卡环
参考答案:B
Some people say that every Senior 3 student is undergoing the most stressful times and with this I can’t agree ________.
A.less
B.many
C.much
D.more
SDS-Hb测定法与HiCN法测定Hb相比最大优化点是()。
A.操作简便
B.呈色稳定
C.准确性高
D.没有公害
E.精确性高