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【单选题】
叶绿素a和叶绿素b对可见光的吸收峰主要是在:A.
绿光区
B.
红光区
C.
蓝紫光红光区
D.
绿光区和红光区
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【简答题】Ann Whimey, a sophomore(大学二年级学生) at Colorado State University, first had a problem taking tests when she began college. 'I was always well prepared for my tests. Sometimes I studied for weeks before a...
【单选题】Convert your customers into publicity agents.
A.
If someone converts a room or building, they alter it in order to use it for a different purpose.
B.
If someone converts you, they persuade you to change your religious or political beliefs.
C.
If you convert a vehicle or piece of equipment, you change it so that it can use a different fuel.
D.
If one thing is converted or converts into another, it is changed into a different form.
【简答题】左肺前缘锐薄，其下分有凹入的()，再下方有向下突出的()。
【单选题】非那西丁含量测定:精密称取本品0.3630g,加稀盐酸回流1小时后,放冷,用亚硝酸钠滴定液(0.1010mol/L)滴定,消耗20.00ml。每1ml亚硝酸钠滴定液(0.1mol/L)相当于17.92mg的C10H13NO2,计算非那西丁的含量 ( )
A.
0.956
B.
0.966
C.
0.986
D.
0.997
【简答题】左肺前缘锐薄,其下有凹入的______,再下方有向前下突出的______。
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