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【单选题】
下列关于浸出辅助剂的陈述中, 错误 的是( )A.
加酸可使生物碱类促进浸出
B.
加甘油可增加鞣质稳定性与浸出
C.
加表面活性剂可促进药材的润湿
D.
浸提辅助剂宜分次加入溶剂中
E.
浸提辅助剂可增加产物的溶解度
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【简答题】The History of the Olympic s Introduction Today, the Olympic s are the world's largest exhibition of athletic skill and competitive spirit. They are also displays of nationalism, commerce and ...
【单选题】The 30th Olympic Games, officially_________as'London 2012 Olympic Games', will take place from July 27 to August 12. [ ]
A.
know
B.
to know
C.
known
D.
knowing
【单选题】关于三相点 , 下面的说法中正确的是 ( )
A.
纯物质和多组分系统均有三相点
B.
三相点就是三条两相平衡线的交点
C.
三相点的温度可随压力改变
D.
三相点是纯物质的三个相平衡共存时的温度和压力所决定的相点
【单选题】What is the best title of the passage?
A.
The Olympic Games
B.
The Olympic Games And The International Olympic Committee (IOＣ)
C.
The International Olympic Committee (IOＣ)
D.
The Winter Olympics And The Summer Olympics
【单选题】--- Excuse me, when and where will the next Olympic Games take place? --- The 31 st Olympic Games _______ in Rio de Janeiro, the capital of Brazil in 2016.
A.
held
B.
will be held
C.
will hold
D.
have been hold
【简答题】阅读理解 The Olympic s began more than two thousand years ago in Greece. The first Olympic s were held in 766 BC. They went on for a thousand years and then were stopped. In 1896, 1,500 years late...
【多选题】关于雪深雪压,以下说法正确的是()
A.
符合观测雪深的日子，每天08时在观测地点将量雪尺垂直插入雪中到地表为止，依据雪面所遮掩尺面的刻度线，读取雪深的厘米整数，小数四舍五入。
B.
每次观测需在10m范围内取三个点进行测量，记入观测簿相应栏内，并求其平均值
C.
若08时未达到测量雪深标准，之后因降雪而达到标准时，应在11、14、17、20时补测一次，记录记在当日雪深栏，并备注。
D.
若气象站四周积雪面积过半，但观测地段因为某种原因无积雪，则应在就近有积雪的地方选择具有代表性的地方测量雪深（雪压）
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