单链DNA:5′-pCpGpGpTpA-3′,能与下列哪一种RNA杂交()
A. 5′-pUpApCpCpG-3′
B. 5′-pGpCpCpApU-3′
C. 5′-pGpCpCpTpA-3′
D. 5′-pApApGpGpC-3′
E. 5′-pApUpCpCpG-3′
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青春是用来( )的
A. 享受
B. 实现
C. 奋斗
D. 梦想
Whatistheadvantageofpistonpumps?
A. highefficiency
B. highoutputpressure
C. bothoftheabove
D. noneoftheabove
Howarethepistonsarrangedinpistonpumps?
A. axially
B. radially
C. bothA.andB.
D. noneoftheabove
Swashplateisusedtochangedisplacementin
A. axialpistonpump
B. radialpistonpumps
C. bentaxispistonpump
D. alloftheabove