首先应给予哪项检查
A.动脉血气分析
B.血电解质测定
C.血糖测定
D.心电图检查
E.脑电图检查
参考答案:B
23. Our train was two hours ______ because of strong winds and heavy rains.
A.late
B.later
C.latest
D.Lately
乳化液泵体的完好标准是什么?