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搜题
【单选题】
法合成的黄色蓝宝石具有哪些鉴定特征?()
A.
450nm的吸收带
B.
内部洁净
C.
白垩色荧光
D.
475nm细吸收线
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【单选题】对外界抵抗力最强的细菌结构是( )
A.
细胞壁
B.
荚膜
C.
芽胞
D.
核质
E.
细胞膜
【单选题】M: Hey, Helen, why aren’t you ready? It’s almost 7 o’clock! W: I’m sorry, Paul. I’m not going. I have to study. M: But you can study later. Don’t you want to go? W: No, not really. I don’t like dinner...
A.
At Helen’s.
B.
At Paul’s.
C.
At Brown’s.
D.
At the woman’s home.
【多选题】关于胶剂的质量要求
A.
应为半透明固体
B.
应无明显气泡及其他杂质
C.
质地脆而坚实
D.
溶于热水,水溶液近澄清
E.
允许有少量不溶物
【单选题】【49~50】 含有甲磺酸酯结构的抗肿瘤药物白消安,在体内的相代谢反应是
A.
甲基化结合反应
B.
与硫酸的结合反应
C.
与谷胱甘肽的结合反应
D.
与葡萄糖醛酸的结合反应
E.
与氨基酸的结合反应
【单选题】对外界抵抗力最强的细菌结构( )
A.
细胞壁
B.
荚膜
C.
芽胞
D.
核质
E.
菌毛
【简答题】阅读理解 In a town there lived a little, beautiful and smart girl. Her name was Rose. Everyone in the town liked her. She was verv brave, but she was scared of the doctor. One day, one of her teeth was ...
【单选题】—I’m going to the stadium ,but I’m afraid I’m not in the right . — .Go ahead.
A.
way ; No
B.
distance ;No
C.
side ;Yes
D.
direction; Yes
【简答题】I took journalism classes and television production classes, always volunteering to appear on camera. I tried to replicate his ease and flair, but found it impossible when discussing news topics or th...
【单选题】若有int b=4,c=3,d=2;则表达式b>c>d的值是( )。
A.
1
B.
2
C.
3
D.
0
【简答题】分子结构为甲萘醌磺酸钠的是
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