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向原电池(-)Zn│Zn2+(1mol/L)丨丨Cu2+(1mol/L)Cu(+)的正极溶液中通入H2S气体,则原电池的电动势( ) A增加 B减少 C不变 D无法判断
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【简答题】减少流体在管路中流动阻力Σ h f 的措施有: _______________________________________________ , __________________________ , _________________________________ 。
【简答题】根据要求完成下列句子。 1. Mr. Smith often flies to Tokyo for the meeting. (同义句转换) Mr. Smith often ______ ______ ______to Tokyo for the meeting. 2. His factory is 10 miles from his home. (对划线部分提问) ______ ______...
【简答题】降低管路系统流动阻力的措施有( )。A. 合理布局,尽量减少管长,少装不必要的管件和阀门; B. 适当加大管径,尽量选用光滑管; C. 在条件允许的情况下,将气体压缩或液化后输送; D. 高粘度液体长距离输送时,可用加热方法或强磁场处理,以降低粘度; E. 在被输送液体中加入固体颗粒;
【单选题】Mr. Smith approved _______ the company.
A.
me to leave
B.
for my leaving
C.
of me to attend
D.
of my leaving
【简答题】t01a0减少流体在管路中流动阻力Σhf的措施有:________________,_____________________, _____________________,_____________________ 。
【简答题】句型转换。 1. Mr. Smith often flies to Tokyo for the meeting. (同义句转换) Mr. Smith often _____ a _____ to Tokyo for the meeting. 2. His factory is 10 miles from his home. (对画线部分提问) _____ is his factory from h...
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