【单选题】The first few paragraphs describe the quarrel between the husband and wife as well as the hardship 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 quarreled.
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.
【简答题】V(CO) 6 容易还原为【V(CO) 6 】 - ;但V 2 (CO) 12 却不如V(CO) 6 稳定?
【单选题】下图为YT4543型动力滑台液压系统原理图,图中每一个元件都有数字编号,编号为9、11的元件名称是:
【简答题】已知Co 3+ +e - ====Co 2+ =1.84V Co 2+ +6CN - ====[Co(CN) 6 ] 4- =1.00×10 19 Co 3+ +6CN - ====[Co(CN) 6 ] 3- =1.00×10 O 2 +2H 2 O+4e - ====4OH - =0.401V
【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】男,15岁,一年来逐渐出现性格古怪。行为离奇。经常拒食或吃饭时不肯咀嚼,要硬性吞下去,不敢吃猪肝,说“吃了猪肝自己会变成猪”。问他拒食原因,答道:“吃饭时米会感到痛苦”,问他根据什么,则答:“过去妈妈说过植物也有神经系统的”。这是( )
【简答题】预言并解释在V(CO)6-,Cr(CO)6,Mn(CO)6+系列中,CO的伸缩振动频率的变化趋势。