—Itistoonoisyhere.Ican'tstandit. —Me.too

Smoking is a very bad habit. First of all, Cigarettes are expensive. Smokers have to   小题1:   a lot of money buying them. That is a   小题2:  (浪费) of money. Smoking is bad for smokers’ h 小题3: . It may be responsible for many d  小题4:  . Even worse, it is harmful to people 小题5:   them. It is said that smoking is one of the ways to   (引起) cancer. Second, there can be fires  小题6:   can result in a great loss of life and property because of a smoker’s (粗心). 小题7:   , we are teenagers and have no income. We have no right to do that. It will be even worse if we f 小题8: into bad habits.

频率在15～100Hz正弦交流电流的摆脱阈由接触面积、电极的形状和大小，以及个人的生理特点等因素决定摆脱阈的平均值为（）。

A.30mA

B.15mA

C.10mA

D.5mA

关于土壤自净的叙述哪一项不属于自净作用（）

A.含氮有机物的氨化作用

B.含氮有机物的硝化作用

C.含碳有机物氧化成二氧化碳和水

D.进入土壤中的化学物质，多数性质稳定，不易降解

E.有机物的腐殖质化

我国规定的“工频”是多少？对其频率偏差有何要求？

企业在资产负债表日或之前违反了长期借款协议，导致贷款人可随时要求清偿的负债，应当归类为流动负债。