汽轮机日常维护不需检查的参数是()。
A、转速
B、进汽压力、温度
C、排汽压力、温度
D、功率
参考答案:D
22. I _____ my university professor in the supermarket near my house, which was out of my expectation.
A.came out
B.came across
C.came about
D.came along
工厂供电就是指工厂所需电能的()。
A.生产和供应
B.生产和分配
C.供应和分配
D.生产和消费