资产配置需求考虑的因素不包括税收考虑。( )
参考答案:错
One and a half hours ________ all I can spare now.[ ]
A. is
B. are
C. was
D. were
放射变应原吸附试验(RAST)检测血清IgE水平时,以下描述正确的是()
A.固相载体包被抗IgE抗体
B.主要用于检测血清总IgE水平
C.放射性核素标记在变应原上
D.能替代皮肤试验和(或)激发试验
E.能定量检测血清中特异性IgE水平