【单选题】在间歇反应器中等温进行一级不可逆反应 A→R ,当转化率达 90 %时,所需反应时间为 2h ,若反应改在管式反应器中进行,空时为 2h ,其它条件同间歇反应器,则转化率为
【单选题】关于等电聚焦电泳,下列哪些叙述是错误的
B.
特别适用于分子量不同而电荷相同的蛋白质的分离
D.
适用于分子量相同而电荷不同的蛋白质或多肽的分离
【单选题】— I wonder if I _____ smoke here. — No, you ______ . Couldn't you see the sign 'NO SMOKING' on the wall? [ ]
【单选题】Why couldn't Karl promise anything?
A.
He didn't want to lend Larry a hand.
B.
Larry's case was too serious.
C.
Larry would be found guilty for sure.
D.
The other members of the jury might not listen to his recommendation.
【单选题】At first, his teacher couldn’t’ realize that Lang Lang had a ________ for music though he said he wanted to learn the piano so much.
【单选题】关于等电聚焦电泳,下列叙述哪个是错误的
B.
特别适用于分子量不同而电荷相同的蛋白质的分离
D.
适用于分子量相同而电荷不同蛋白质或多肽的分离
【判断题】Parick couldn’t walk after an accident.
【单选题】患者,女,30岁。诊断类风湿关节炎入院,经 使用药物治疗后患者关节疼痛减轻,但出现体重增加、满月脸、 药物的副作用( )
【单选题】—What's up? —Such a noise ______ that I couldn't go on with my work.