诚信教育普及阶段中，针对理念的是（）
A.提升阶段
B.自律阶段
C.规范阶段
D.奖惩阶段
参考答案：A
Polly observed that she ______ by a tall man in a dark coat when she ______ the faces around her on the train.
A．was watched; stared at
B．was being watched; glanced at
C．was being watched; glared at
D．was watched; looked at
闪蒸罐的真空是靠（）产生的。
A、水环式真空泵
B、蒸气喷射泵
C、顶部与气液分离罐相连
D、顶部与蒸发三塔相连
