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【单选题】
厚朴酚的结构属于
A.
香豆素
B.
木脂索
C.
苷类
D.
黄酮类
E.
醌类
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参考答案:
举一反三
【单选题】Each member has a chance to _______ his argument in the conference.
A.
present
B.
recall
C.
stock
D.
council
【单选题】稳压二极管在稳压电路中通常工作于( )。
A.
正向导通状态
B.
反向电击穿状态
C.
反向截止状态
D.
热击穿状态
【简答题】vfd是吧高富帅你还敢说你活该
【单选题】稳压二极管的正常工作时处于哪种状态?
A.
正向导通
B.
反向击穿
C.
正向截止
D.
反向导通
【多选题】牛顿三大定律包括 ( )
A.
惯性定律
B.
力与加速度之间的关系的定律
C.
作用与反作用定律
D.
刚化原理
E.
加减平衡力系原理
【单选题】The rationale for the government's involvement in each mode of transportation is that a strong transportation system is necessary for developing the nation's economy or for its defense.
A.
conviction
B.
principle
C.
premise
D.
medium
【单选题】On April 1st, westerners will play ________ on each other, but make sure that no one is hurt. [     ]
A.
fun
B.
fool
C.
jokes
D.
games
【多选题】牛顿三大定律包括( )
A.
作用与反作用定律
B.
刚化原理
C.
惯性定律
D.
力与加速度之间的关系的定律
【单选题】In the U. S. , it is common that each state ______ its power to an elected or appointed state board of education.
A.
exercises
B.
applies
C.
adjusts
D.
delegates
【简答题】阅读理解。 Throughout each year, many special s are held at St. Croix Lutheran High School. Here is some information on four s. Starlight Dinner Concert It begins at 5:00 pm on October 8, 2009 wi...
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