丙烯腈余热炉紧急停车系统动作后，余热炉燃料系统的动作是情况是（）。

A、燃料气及燃料油总阀电磁阀均关闭

B、燃料气总阀及支线阀、燃料油总阀及支线阀电磁阀均关闭

C、燃料气总阀及支线阀、燃料油总阀电磁阀均关闭

D、燃料气总阀及支线阀、燃料油支线阀电磁阀均关闭

What has happened to the Amazon jungle

A．Highways have been constructed through the jungle to help ease the traffic in the cities.

B．Jaguars, parrots and deer that once inhabited the jungle have left because me place was getting too hot for them.

C．The land has been cleared for growing soybeans because it is the most popular Brazilian food.

D．Fast economic development has brought devastating changes to the natural environment in Brazil.