根据烯烃中心工艺卡片的要求，反应器密相床层温度TICA1101应控制在（）。
参考答案：475±15℃
The boy wanted to ride his bicycle in the street, but his mother told him _______.
A．not to
B．not to do
C．not do it
D．do not do
防止汽轮机进水进冷气的措施有哪些（运行方面）？
