Lan is 80-years-old and her health is deteriorating. Her two grandchildren have lived with her for many years since their parents died. Lan wishes to transfer her house and other belongings to the grandchildren and to authorise them to carry out banking and other transactions on her behalf. The grandchildren are aged 15 years and 19 years.Required:

(b) Explain how Lan’s grandchildren may be authorised to carry out transactions on her behalf. (5 marks)

气化和混气站的液化石油储罐(总容量10m³以下)与站外民用建筑的防火间距是 ( )m。

A．25

B．30

C．35

D．4.0