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【单选题】
细胞质中1分子NADH氧化生成1.5分子ATP,线粒体内1分子NADH氧化则生成2.5分子ATP,这是因为:A.
胞质NADH通过线粒体内膜时消耗ATP
B.
胞质NADH解离生成NAD+需要消耗ATP
C.
胞质NADH需转变成NADPH后才能进入线粒体
D.
胞质NADH需要α-磷酸甘油穿梭最终进入FADH2呼吸链
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【单选题】变压器过励磁保护是按磁密度正比于（）原理实现的。
A.
电压U与频率f乘积；
B.
电压U与频率f的比值；
C.
电压U与绕组线圈匝数N的比值；
D.
电压U与绕组线圈匝数N的乘积。
【简答题】氧化铝瓷件表面上涂银后,当烧至1000°C时,已知γ(Al2O3,固)=1J/m2; γ(Ag,液)=0.92J/m2; γ(Ag,液/Al2O3,固)=1.77J/m2,试问液态银能否润湿氧化铝瓷件表面?
【简答题】Many Pakistani families have tea with ________ from a local bakery.
【单选题】Bimbo Bimbo perhaps is the most popular local brand in bakery in Mexico. Every day, its products including sliced bread. cakes, and snacks are delivered nationwide by trucks. Executives at the Mexico ...
A.
Bimbo has had a spotty record with its prior U. S. investments, too.
B.
Bimbo had an estimated profit of $188 million in 2001 on sales of $3.8 billion.
C.
This means that Bimbo cannot accomplish its takeover.
D.
They're spending $50 million on a companywide information-management system from Oracle Corp.
E.
It also gives the company access to a market estimated at 120 million consumers, 20% of whom are Hispanic, allowing the company to expand the reach of its existing bread and tortilla manufacturing facilities in Texas and California.
F.
Because there aren't that many of them. (8)
【单选题】关于劳斯稳定性判据和奈奎斯特稳定性判据,以下叙述中正确的是( )。
A.
劳斯判据属于代数判据，是用来判断开环系统稳定性的。
B.
奈奎斯特判据是用来判断开环系统稳定性的。
C.
奈奎斯特判据是 根据系统的开环频率特性 来判断闭环系统稳定性的 。
D.
以上叙述均不正确。
【单选题】In order to promote tourism, the local government ______ plans for an advertising campaign.
A.
is making
B.
are making
C.
have made
D.
was making
【单选题】变压器过励磁保护是按磁密 B正比于_____原理实现的。
A.
电压 U与频率f的乘积
B.
电压 U与频率f的比值
C.
电压 U与绕组线圈匝数N的比值
D.
电压 U与绕组线圈匝数N的乘积
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