防止省煤器磨损的措施有哪些？

赵某拥有两处房产，一处原值60万元的房产供自己和家人居住，另一处原值20万元的房产于2004年7月1日出租给王某居住，按市场价每月取得租金收入1200元。赵某当年应缴纳的房产税为（）元。

A.288

B.576

C.840

D.864

企业对长期股权投资计提的减值准备，在该长期股权投资价值回升期间应当转回，但转回的金额不应超过原计提的减值准备。（）

两列火车相向而行，第一列的速度大小为36km／h，即        m／s。第二列为54km／h。第一列火车上的乘客测出两列火车从相遇到分开所用的时间为5s则两列火车的长度之和为           m

When Mr. David retired（退休）,he bought a small house in a village near the sea. He liked it and hoped to live a quiet life in it.

But to his great surprise, many tourists came to see his house in summer holidays, for it was the most interesting building in the village. From morning to night there were tourists outside the house. They kept looking into the rooms through the windows and many of them even went into Mr. David’s garden. This was too much for Mr. David. He decided to drive the visitors away. So he put a notice on the window. The notice said: “If you want to satisfy your curiosity（好奇心）, came in and look round. Price: twenty dollars.” Mr. David was sure that the visitors would stop coming, but he was wrong. More and more visitors came and Mr. David had to spend every day showing them around his house. “I came here to retire, not to work as a guide（导游）.” he said angrily. In the end, he sold the house and moved away.

小题1:Mr. David’s house was              that many tourists came to see it.

A．so small

B．so quiet

C．so interesting

D．such interesting小题2:Mr. David put a notice on the window in order                   .

A．to drive the visitors away

B．to satisfy the visitor’s curiosity

C．to let visitors come in and look round

D．to get some money out of the visitors小题3:The notice made the visitors                 .

A．more interested in his house

B．lost interest in his house

C．angry at the unfair price

D．feel happy about the price小题4:After Mr. David put up the notice ,                          .

A．the visitors didn’t come any longer

B．fewer and fewer visitors came to see his house

C．more and more tourists came for a visit

D．no tourist would pay the money for a visit

汇票分为商业承兑汇票和银行承兑汇票。 ( )