燃气轮机点火成功后，控制系统将增大燃料流量使机组进入暖机阶段。（）
参考答案：错
如果两个有理数满足x+y=0，则x、y一定是（ ）。
The conference has been held to discuss the effects of tourism ________the wildlife in the area.
A．in
B．on
C．at
D．with
