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【简答题】
系统的性能指标中峰值时间指响应曲线到达()所需要的时间。
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皮皮学刷刷变学霸
举一反三
【单选题】The Puritans came to the new land for religious freedom, yet they allowed little freedom to their followers. Anne Hutchinson was banished from the colony for preaching that salvation can come through ...
A.
ironic
B.
sentimental
C.
optimistic
D.
friendly
【多选题】关于ChP2015收载阿司匹林栓剂的含量测定方法描述正确的是 ( )
A.
因阿司匹林为酸性药物，故采用离子对色谱法。
B.
流动相加入冰醋酸是为了抑制阿司匹林的解离。
C.
为了消除栓剂基质对测定方法的影响，以1%冰醋酸甲醇溶液为介质，40-50℃水浴加热溶解阿司匹林，冰浴中冷却使基质重新凝固，过滤除去。
D.
流动采用磷酸盐缓冲溶液，加入离子对试剂四丁基氢氧化铵生成离子对，调整了色谱保留行为，从而提高了样品分析的重现性和色谱峰的对称性。
E.
选用HPLC法测定是因其具分离分析功能，可消除有关物质、辅料等干扰。
【单选题】The Puritans came to the New world for ______.
A.
gold
B.
glory
C.
God
D.
All of them
【单选题】The Puritans came to the new land for religious freedom, yet they allowed little freedom to their followers. Anne Hutchinson was banished from the colony for preaching that salvation can come through ...
A.
ironic
B.
sentimental
C.
optimistic
D.
【单选题】Which of the following is NOT the reason that the Puritans came to America?
A.
to establish permanent colonies
B.
to escape religious persecution
C.
to reform the Church of England
D.
to have an entirely new church
【单选题】The Puritans came to the new land for religious freedom, yet they allowed little freedom to their followers. Anne Hutchinson was banished from the colony for preaching that salvation can come through ...
A.
ironic
B.
sentimental
C.
optimistic
D.
cheerful
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