Which group of children have a bias when choosing musical instruments?
A.Children with private music tutors.
B.Children who are between 5 and 7.
C.Children who are well-educated.
D.Children who are 8 or older.
第1题
药典规定:制川乌含酯型生物碱以乌头碱计,不得高于
A.0.015%.
B.0.05%.
C.0.15%.
D.0.025%.
E.0.10%.
第6题
《中国药典》2005年版一部规定的方法测定,制川乌含生物碱以乌头碱计不得少于
A、0.10%
B、0.20%
C、1.50%
D、0.50%
E、2.00%
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