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【判断题】
注册资本是旅行社开展业务经营活动的基础,也是旅行社承担法律责任的基本保证,旅行社的注册资本为不少于30万元
A.
正确
B.
错误
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参考答案:
举一反三
【判断题】Although straight-A illiteracy affects fewer people than ordinary illiteracy, Degnan still thinks it is worse than the latter type.
A.
正确
B.
错误
【单选题】S N 2 反应历程的特点是()
A.
反应分两步进行
B.
反应速度与碱的浓度无关
C.
反应过程中生成活性中间体碳正离子
D.
S N 2 产物的构型完全转化
【简答题】Cloze test. When I entered Berkeley, I hoped to earn a scholarship. Having been a Straight-A student. I believed I could 1 tough subjects and really learn something. One such course was World Literatu...
【简答题】When I entered Berkeley. I hoped to earn a scholarship. Having been a Straight-A student, I believed I could 36 tough subjects and really learn something. One such course was World Literature given by...
【单选题】下面哪种说法不属于 S N 2 机理( )
A.
双分子反应,反应速率与卤代烷及亲核试剂浓度有关;
B.
反应一步完成,旧键的断裂和新键的生成同时进行;
C.
有活泼中间体正碳离子生成,若反应物中连卤素的碳原子为手性碳原子,则可能发生外消旋化。
D.
反应过程伴有“构型转化”
【单选题】以下( )不属于损害事实的条件。
A.
损害的可补救性
B.
损害对象的确定性
C.
损害的确定性
D.
损害对象的合法性
【简答题】When I entered Berkeley, I hoped to earn a scholarship. Having been a Straight-A student, I believed I could tough subjects and really learn something. One such course was World Literature given by Pr...
【判断题】S N 2 反应过程中生成活性中间体碳正离子。
A.
正确
B.
错误
【简答题】In geodetic surveys, the shape of the earth is thought of as a spheroid, although in a technical sense, it is not really a spheroid. There fore, distances measured on or near the suce of the earth ...
【多选题】关于开普勒行星运动的公式 =k,以下理解正确的是( )
A.
k 是一个与行星无关的量
B.
若地球绕太阳运转轨道的长半轴为R,周期为,月球绕地球运转轨道的长半轴R’ 周期为 T,则 =
C.
T表示行星运动的自转周
D.
T表示行星运动的公转周期
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