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【多选题】
序列格式中Fasta格式的特点是什么?A.
只用于记录DNA序列
B.
在新的一行中序列以“>”开始
C.
是一种文本格式
D.
以字母的格式提供序列
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反馈参考答案：
举一反三
【单选题】— When did you buy the car? — In November. I ______ it for two months. [ ]
A.
bought
B.
have bought
C.
have had
【简答题】连续性方程的物理意义是什么?写出不可压缩流体的连续性方程表达式。
【单选题】– What a nice bicycle! – Thanks. I ________ it for two months.
A.
have bought
B.
bought
C.
have had
【简答题】流体流动的连续性方程是 ;适用于圆形直管的不可压缩流体流动的连续性方程为 。
【简答题】一维流动的连续性方程υA=C成立的必要条件是______。 A理想流体；B黏性流体；C可压缩流体；D不可压缩流体。
【单选题】—When _____ you _____ this book? —I ____ it for two weeks.
A.
have; bought; have had
B.
did; buy; have had
C.
have; bought; bought
D.
did; buy; have bought
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