197
197
In 1803 the United States purchased Louisiana from _____.
In 1803 the United States purchased Louisiana from _____.
IfI______(stay)in business, Imight bea really wealthy man today.
IfI______(stay)in business, Imight bea really wealthy man today.
整常数197的表达成197,默认是十进制数,默认位宽是()
整常数197的表达成197,默认是十进制数,默认位宽是()
197~198题共用备选答案:第197题与胃癌发病有关的因素是()
197~198题共用备选答案:第197题与胃癌发病有关的因素是()
In 1803, President Jefferson negotiated the purchase of Louisiana from Mexico.
In 1803, President Jefferson negotiated the purchase of Louisiana from Mexico.
在GBFF格式中,特性位置146^197 表示从146到197碱基之间的这段序列。( )
在GBFF格式中,特性位置146^197 表示从146到197碱基之间的这段序列。( )
78×78×78×……×78(1995个78)的积的个位上的数字是几?() A: 8 B: 4 C: 2 D: 6
78×78×78×……×78(1995个78)的积的个位上的数字是几?() A: 8 B: 4 C: 2 D: 6
若正反应的活化能为Ea,逆反应的活化能为Ea´,则正反应的热效应∆rHm为 A: ∆rHm=Ea´—Ea B: ∆rHm=|Ea´-Ea| C: ∆rHm=|Ea-Ea´| D: ∆rHm=-(Ea´-Ea)
若正反应的活化能为Ea,逆反应的活化能为Ea´,则正反应的热效应∆rHm为 A: ∆rHm=Ea´—Ea B: ∆rHm=|Ea´-Ea| C: ∆rHm=|Ea-Ea´| D: ∆rHm=-(Ea´-Ea)
若正反应的活化能为Ea,逆反应的活化能为Ea’,则正反应的热效应 DrHm为 A: DrHm=Ea’-Ea B: DrHm=│Ea’-Ea│ C: DrHm=│Ea-Ea’│ D: DrHm=-(Ea’-Ea)
若正反应的活化能为Ea,逆反应的活化能为Ea’,则正反应的热效应 DrHm为 A: DrHm=Ea’-Ea B: DrHm=│Ea’-Ea│ C: DrHm=│Ea-Ea’│ D: DrHm=-(Ea’-Ea)