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【单选题】
限制性核酸内切酶切割 DNA 后产生
A.
3′- 磷酸基末端和 5′- 羟基末端
B.
5′- 磷酸基末端和 3′- 羟基末端
C.
3′- 磷酸基末端和 5′- 磷酸基末端
D.
5′- 羟基末端和 3′- 羟基末端
E.
以上都不是
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举一反三
【单选题】Keeping to the high roads, cycling as fast as he could, allowed him to make the trip in record time.
A.
and not stop for rest
B.
as well as not to stop for rest
C.
and not stopping for rest
D.
and stopping not for rest
【单选题】Keeping to the high roads, cycling as fast as he could, _____ allowed him to make the trip in record time.
A.
and not stop for rest
B.
as well as not to stop for rest
C.
and not stoping for rest
D.
and stopping not for rest
【简答题】人们只有在改造___的过程中才能以实践为桥梁,化理想为现实。
【单选题】下列( )格式文件大量用于网页中的图像制作方面。
A.
PNG
B.
PSD
C.
TIFF
D.
JPEG
【单选题】在下面的文件格式中,常用于网页中的图像制作的是
A.
PSD
B.
EPS
C.
TIFF
D.
JPEG
【单选题】Keeping to the high roads, cycling as fast, cycling as fast as he could, allowed him to make the trip in record time.
A.
and not stop for rest
B.
as well as not to stop for rest
C.
and not stopping for rest
D.
and stopping not for rest
【简答题】下图是我国省区轮廓及其境内的铁路线。 (1)甲省是__________省,在郑州交会的两条铁路干线是__________线与___________线。 (2)乙省的简称是______,该省有举世瞩目的三峡工程,经过该省的三条铁路由西向东依次是焦柳线、__________、___________。 (3)丙图是_________省,该省主要分布在_________高原上,连接贵阳和昆明之间的铁路线是...
【单选题】Keeping to the high roads, cycling as fast as he could, and _____ allowed him to make the trip in record time.
A.
and not stop for rest
B.
as well as not to stop for rest
C.
and not stopping for rest
D.
and stopping not for rest
【判断题】人们只有在改造客观世界和主观世界的过程中才能以实践为桥梁,化理想为现实。
A.
正确
B.
错误
【单选题】下面( )格式用于网页中的图像制作
A.
EPS
B.
DCS2.0
C.
TIFF
D.
JPEG
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