皮皮学，免费搜题
登录
搜题
【判断题】
逆转录 PCR 最先以 RNA 为模板,在逆转录酶的作用下合成 cDNA, 再以 cDNA 为模版通过 PCR 反应来扩增目的基因。A.
正确
B.
错误
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】数学表达式 x > 3 或 x < 5 对应的 C 语言逻辑表达式是 ( ) 。
A.
x > 3 || x < 5
B.
x > 3 && x < 5
C.
x > 3 | x < 5
D.
x > 3 & x < 5
【单选题】（ ）are specialized programs that assist you locating information on the web.
A.
OS
B.
Browse
C.
DBMS
D.
Search engines
【单选题】Why did Steve Jobs leave college?
A.
He was hoping to transfer to another university.
B.
His interest conflicted with the university courses.
C.
He was eager to make money to support himself.
D.
He honored his adopting parents by dropping out.
相关题目：