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【简答题】
对于缺牙间隙多，各基牙倒凹均大者，常采用调节倒凹斜向就位道。
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皮皮学刷刷变学霸
举一反三
【单选题】Which of the following conditions will make a relation that is in first normal form. to be in second normal form? Ⅰ.every non-key attribute is functionally dependent on the full set of primary key att...
A.
Ⅰ only
B.
Ⅰ and Ⅱ only
C.
Ⅰ and Ⅲ only
D.
any of them
【简答题】请翻译菜名:Bird's Nest Soup
【简答题】阅读理解。 BEIJING, Nov. 30 - The Bird's Nest may have been built for last year's Summer s but Beijing's Olympic stadium will soon be aiming at fans of winter sports. As temperatures have begun to drop...
【单选题】测得由反应2S 2 O 3 2- +I 2 →S 4 O 6 2- +2I - 构成的原电池标准电动势为0.445V。已知电对I 2 /I - 的E θ 为0.535V,则电对S 4 O 6 2- /S 2 O 3 2- 的E θ 为( )
A.
-0.090V
B.
0.980V
C.
0.090V
D.
-0.980V
【简答题】由化合物 A ( C6H13Br )制得的格氏试剂与丙酮作用可生成 2 , 4- 二甲基 -3- 乙基 -2- 戊醇。 A 消除反应生成两种互为异构体的产物 B 和 C 。将 B 臭氧化和还原水解,得到相同碳原子数的 D 醛和酮 E 。试写出 A 、 B 、 C 、 D 、 E 的名称。 A : B : C : D : E :
【单选题】Not until the stadium of Bird's nest was completed in the end ____back to their normal position. [ ]
A.
did our hearts got
B.
did our hearts get
C.
our hearts went
D.
our hearts did get
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