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【单选题】
地黄、玄参等中药在加工过程中易变黑,是因为其中含有A.
单萜类
B.
芍药类
C.
环烯醚萜苷药
D.
倍半萜内酯类
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反馈参考答案：
举一反三
【单选题】Which of the following is NOT Sharon's advice on checking your credit scores?
A.
Keep a copy of your credit report.
B.
Show your partner the credit report.
C.
Try to know your credit score.
D.
Lock your credit report away.
【单选题】The painting is not a (n) ______ works; it is a copy.
A.
original
B.
crude
C.
true
D.
fresh
【单选题】在SE序列中，射频脉冲激发的特征是（）
A.
a<90°
B.
90°-90°
C.
90°-180°
D.
90°-180°-180°
E.
180°-90°-180°
【单选题】Which of the following is NOT mentioned about the F6600-D Copy and Print System?
A.
It has a fax function.
B.
It has a scanner function.
C.
It costs a little less than $2,000.
D.
It can make reductions and enlargements.
【单选题】Which of the following is NOT true?
A.
After injection, the embryo gets a copy of the new gene as it divides.
B.
The injection method is less good because the new gene sometimes fails to join the embryo's genes.
C.
The retrovirus multiplies after it enters the cell.
D.
the incorporating method is less but better.
【简答题】肥胖病发生的主要诱因是( )。
【单选题】Which of the following is NOT true?
A.
After injection, the embryo gets a copy of the new gene as it divides.
B.
The injection method is less good because the new gene sometimes fails to join the embryo's genes.
C.
The retrovirus multiplies after it enters the cell.
D.
The incorporating method is less but better.
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