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【简答题】
关于红外光谱的吸收峰，下面叙述正确的是( ) A．诱导效应使吸收峰向方向移动 B．物质分子发生互变异构时，吸收峰位置不发生变化 C．共轭效应使吸收峰向低波数方向移动 D．氢键的形成使吸收峰向方向移动
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举一反三
【简答题】—Jack, this is the third time that you have been late this week. —Sorry, sir, but I was help ________ for 15 minutes on the way here in the traffic jam.
【单选题】According to the passage, what are third party screeners?
A.
Those who help detect deceptions.
B.
Those who help employ workers.
C.
Those who help glee counseling.
D.
Those who help write resumes.
【单选题】According to the passage, what are third-party screeners?
A.
Those who help detect deception.
B.
Those who help employ workers.
C.
Those who help give counseling.
D.
Those who help write resumes.
【单选题】(Paragraph 4) In the third group, only 31 percent tried to help.
A.
More people decided not to help.
B.
The third group had many people.
C.
Thirty-one percent was a big number.
【单选题】执行口头医嘱错误的选项是
A.
一般情况下不执行，手术及紧急情况下执行
B.
执行后无异常，不必记录在医嘱单上
C.
执行时护士应向医生重复一遍
D.
双方确认无误后执行
【单选题】One third of the class _____ agreed to be volunteers to help the aged this vocation.
A.
are
B.
is
C.
has
D.
have
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