职业卫生与职业医学是预防医学的一个分支学科，其主要任务是（） A.对受到职业危害因素

自然灾害的社会性还表现为人类和社会的（）、其可管理性等方面。

工程建设中，建设单位和施工单位的下列行为，符合《消防法》规定的是( )。

A．在施工前设计单位将建筑工程的消防设计图纸报送公安消防机构审核后施工

B．消防设计变更，建设单位报送原审核的公安消防机构核准

C．施工单位将部分工人安排在仓库里临时居住

D．工程竣工后，建设单位报公安消防机构备案即投人使用

Do you know how to play a game called “Musical Chairs”？It is easy to play and most people enjoy it. All you need are some chairs, some people and some way of making music. You may use a piano or any other musical instrument, if someone can play it. You may use a tape recorder. You can even use a radio.

Put the chairs in a row. The chairs may be put in twos, back to back. A better way is to have the chairs in one row with each chair facing in the opposite direction to the chair next to it.

The game is easy. When the music starts, the players walk round the chairs. Everyone goes in the same direction, of course, they should walk in time to the music. If the music is fast they should walk quickly. If the music is slow, they should walk slowly.

The person playing music cannot see the people in the game. When the music stops, the players try to sit on the chairs. If a person cannot find a chair to sit on, he drops out. Then, before the music starts again, one chair must be taken away. When the music stops again, one more player will be out.. At last, there will be two players and one chair. The one who sits on the chair when the music stops is the winner.

小题1:If ten people are playing musical chairs，you must begin with _______.

A．nine chairs

B．ten chairs

C．eleven chairs

D．one chair小题2:Which of the following is not suitable for playing musical chairs？ _______.

A．A piano

B．A radio

C．A tape recorder

D．A telephone小题3:The chairs should be put _______.

A．with the desks

B．before the winner

C．all over the room

D．in a line小题4:When the music starts，the players must _______.

A．run about the room

B．get down

C．walk around the chairs

D．sit on the chairs小题5: Which of the following statements is NOT true？

A．The game “Musical Chairs” is not difficult to learn.

B．The last one can sit on the last chair.

C．The winner can sit on the chair.

D．If the person plays music, he cannot be the winner.

对项目管理的成败负有全面责任的是( )。

A．咨询工程师
B．业主
C．政府
D．承包商

因堤防防渗能力差而可能导致背河滑坡时，可采取贴坡反滤排水，以（）。

A.减小渗流量

B.防止渗透变形

C.阻截渗水

D.防冲