Which sequence is correct according to the procedure of PCR ?()
A: denaturation → extension → annealing
B: denaturation → annealing → extension
C: annealing → denaturation→ extension
D: Extension → annealing → denaturation
A: denaturation → extension → annealing
B: denaturation → annealing → extension
C: annealing → denaturation→ extension
D: Extension → annealing → denaturation
B
举一反三
- PCR<br/>process includes three steps, they are() A: denaturation B: annealing C: extention D: cooling
- The proper preliminary heat treatment for T12 steel is . A: complete annealing B: homogenizing annealing C: spheroidizing annealing D: isothermal annealing
- DNA变性(DNA denaturation)
- DNA变性（DNA denaturation）
- 开启mysqli扩展的配置语句是（ ）。 A: extension=php_mysql.dll B: extension=php_mysqli.dll C: extension=php_pdo_mysql.dll D: extension=php_gd2.dll
内容
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核酸的变性、复性（denaturation、renaturation）
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在下列php.ini的配置项,哪一项可以开启mysqli扩展()。 A: extension=php_mysql.dll B: extension=php_mysqli.dll C: extension=php_pdo_mysql.dll D: extension=php_oracle.dll
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在下列php.ini的配置项中，哪一项可以开启MySQLi扩展（） A: extension=mysql B: extension=mysqli C: extension=pdo_mysql D: extension=oracle
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Questions 9 to 11 are based on the conversation you have heard. What’s the man's telephone number?（） A: 0743,12536 extension 15. B: 0734,38750 extension 15. C: 0734,21653 extension 51. D: 0734,62135 extension 51.
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扩展是PHP的一大优点,当需要使用PHP操作MySQL数据库时,需要开启的扩展为() A: extension=php_curl.dll B: extension=php_gd2.dll C: extension=php_mbstring.dll D: extension=php_mysqli.dll