热水锅炉因无蒸发，所以受热面上就不会结生水垢
参考答案：错
—When can we make an appointment with you , sir ?
—What about Wednesday afternoon ?
—OK．_______
A．Do you have time then ?
B．It doesn’t suit me．
C．That’s settled．
D．It’s so nice to meet you．
国家强制力是指[ ]
①警察 ②法庭 ③监狱 ④军队
A、①②④
B、①②③④
C、②③④
D、①②③
