一室模型消除速度常数是（）
A.α
B.β
C.α+β
D.α·β
E.
参考答案：E
We regret ________ you that your application has been rejected. [ ]
A. to inform
B. informing
C. to be informed
D. having informed
对于引起HO的原因，下面（）描述是错误的。
A.Better cell HO
B.Emergency HO
C.Low battery HO
D.Power budget HO
