【简答题】实验中用Br2水在碱性介质中氧化Co2+,已知Eθ(Br2/Br-)=1.07 V,Eθ(Co3+/Co2+)=1.84 V,KSPθ(Co(OH)3)=1.6×10-44,KSPθ(Co(OH)2)=1.6×10-15;计算: (1)Eθ(Co(OH)3/Co(OH)2); (2)反应的平衡常数Kθ。
【单选题】在某商店,一位顾客在某服装摊位前驻足,并对一种款式的风衣多看了几眼。摊主想一定要吸取以前轻易放走顾客做不成生意的教训,要调整自己的策略,真诚与顾客合作。想到这儿,摊主前来搭话:“看得出你对这件衣服比较感兴趣,这是今年冬天最流行的款式,面料是从国外进口的,你是否愿意试试?”察觉到顾客无任何反对意见时,摊主继续说:“这衣服标价750元,你如果真有兴趣,就580元给你,怎么样?”看到顾客仍旧没有表态,摊...
【单选题】The first few paragraphs describes the quarrel between the husband and wife as well as the relationship of the servant Sophia. Based on those paragraphs, which of the following is true of the quarrel?
A.
It was not the first time they quarrel
B.
They seldom quarreled and therefore both of them lost control
C.
The husband spoke softly as he never lost his self-control.
D.
The wife was forgiven and silent
【单选题】商业汇票的承兑期限由双方商定,最长不能超过( )。
【判断题】针对可能发生的危机事件,预测预警系统应发布预警级别等预警信息。预警级别依据突发事件可能造成的危害程度、紧急程度和发展势态,一般可划分为四级:Ⅰ级(特别重大)、Ⅱ(严重)、Ⅲ(较重)、Ⅳ(一般),依次用蓝色、黄色、橙色和红色表示。( )
【判断题】突发事件的实际级别与预警级别密切相关,预警级别完全等于事件的实际危害程度和影响范围。 ( )
【单选题】YT4543动力滑台液压系统,元件11上两节流阀的作用是( )。【图片】
【单选题】液压系统的动力元件是( ) A. 电动机 B.液压泵 C.液压缸 D.液压阀 ,