Which is not the complication of ovarian tumor?   
A、Torsion  
B、rupture  
C、 Malignant transformation
D、 Infection
E、red degeneration

液压系统故障的（）%是由液压油污染造成的。 A. 50 ...

单项选择题液压系统故障的（）%是由液压油污染造成的。 A.
50 B.
60 C.
70 D.
80

At the beginning of the year, Beta Company's balance sh...

单项选择题At the beginning of the year, Beta Company's balance sheet reported Total Assets of 75,000. During the year, the company reported total revenues of 175,000. Also, owner withdrawals during the year totaled 174,000.
B、120,000.
E、$123,000.

还原染料的还原速率常用[填空1]来表示。

问答题还原染料的还原速率常用[填空1]来表示。