脑血栓形成患者服用阿司匹林,目的是
A.退热
B.抗风湿
C.扩张脑血管
D.抗血小板聚集
E.防止头晕
参考答案:D
What_______useful book it is! Yeah,it tells you how to play ______violin.
A.an,the
B.a,a
C.a,the
D.an,a
检查维生素C中的重金属时,若取样量为 1.0g,要求含重金属不得超过百万分之十,问应吸取标准铅溶液(每1ml=0.01mgpb)多少ml
A.0.2ml
B.2ml
C.0.4ml
D.1ml
E.20ml