已知数组float b[3][2];该数组行下标的范围是( )。
A. 1—3
B. 0—3
C. 1—2
D. 0—2
查看答案
以下电路中,加以适当辅助门电路,( )适于实现单输出组合逻辑电路。
管理组织是保证管理目标实现的重要手段,下面不属于常用的管理组织形式的是( )。
A. U
B. H
C. M
D. A
Inasampleofdouble -stranded DNA, 30%ofthe nitrogenous basesarethymine (T). WhatpercentageofthebasesareGuanine(G)?
A. 20%
B. 30%
C. 40%
D. 60%
HowdidtheAvery-MacLeod-McCartyexperimentexpandonFrederickGriffith'sobservations?
A. ItsuggestedthatDNAisthe“transformingprinciple."
B. ItconfirmedthatDNAisadoublehelixcomposedoftwoantiparallelstrands.
C. ItdemonstratedthatDNAconsistsoffournucleotideswheretheproportionsofadenine/thymineandcytosine/guanineremainconstant.
D. ItprovedthatDNAissemiconservativelyreplicated.