试述成本与可变现净值孰低法在我国存货计价应用中的相关规定。

___by the horrible earthquake, many buildings needed to be repaired in the capital of Haiti.[ ]

A. To be destroyed  

B. Destroying    

C. Destroyed    

D. Having destroyed

不能纳入基本医疗保险用药范围的是（）

A．中药材

B．中药饮片

C．中成药

D．血液制品（特殊适应证）

E．果味制剂

Don't you know that smoking is harmful to your health? And furthermore, our teacher does

not ________cigarettes.[      ]

A. approve us to smoke

B. approve of us smoking

C. approve us smoke

D. approve of us smoke

在多级泵的泵壳和（）之间应装上密封环，也叫口环。

A.叶轮

B.挡套

C.轴套

D.导翼

汽油发动机启动困难，经检查启动系、点火系和燃料供给系均无故障时，则应对（）进行测试。