活性碳是非极性吸附剂，故对一切有机物都有较强的吸附力。（）

____that tears came to her eyes．

A．She was so deep moved

B．She was so moved deeply

C．So deeply was she moved

D．So deeply she was moved

近井点

当桩身存在着离析时，波阻抗变化主要表现为（）的变化。

A.ρ

B.C.

C.A.

D.ρ•C

我国养老保险的组成部分不包括（）。

A.个人储蓄型养老保险 

B.企业补充养老保险 

C.基本养老保险 

D.国家统筹型养老保险

带传动与链传动的优缺点。