塔顶温度过高或过低有何危害？
参考答案：
过高：汽油干点升高，产品不合格；
过低：汽油干点低，且蒸汽会凝结成水，易造成水蒸汽冲塔。
同一宗房地产，无租约限制价值、出租 * * 益价值和承租 * * 益价值三者之间的关系一般为( )。
A．无租约限制价值=承租 * * 益价值-出租 * * 益价值B．无租约限制价值=出租 * * 益价值-承租 * * 益价值C．无租约限制价值=出租 * * 益价值+承租 * * 益价值D．以上均不正确
A: Good morning, sir! Can I 1 you?
B: Yes, I’d like to buy a copy of 21st Century.
A: Here you are.
B: Thank you. 2 much is it?
A: Just one yuan. Do you want anything _ 3 ?
B: Yes, a copy of China Daily.
A: The English newspaper?
B: Yes.
A: Oh, sorry. They are sold 4 .
B: Do you have China Youth Daily?
A: Of course! Here you are.
B: OK! I’ll take 5 of them.
