题目内容

高层主体建筑内的变电所应选不然或难燃型变压器。

A. 对
B. 错

查看答案
更多问题

单台变压器的容量选择,不宜大于2000KVA。

A. 对
B. 错

No horse has a speed c_________ to that of his. He often r_________ to a dictionary when composing. He was a_________ as England’s greatest modern painter. I can take you to the airport and see you o_________. Susan is my c_________, we were at school together. The p_________ of the characters in the novel is lifelike. Oil will not m_________ with water.

符合甲型强心苷元结构特征的是( )

A. C/D环顺式稠合
B/C环反式稠合
C. A/B环顺式或反式稠合
D. C17连接五元不饱和内酯环

下列有关强心苷的溶解性正确的说法是( )

A. 强心苷可溶于乙醚
B. 强心苷可溶于乙醇
C. 次生苷亲水性强
D. 苷元亲脂性强

答案查题题库