造成沥青混合料拌和物出现花白料、结团的原因是( )。A．粗集料用量大 B．矿粉用量多

阅读理解。

     My friend has a large dog named Jack. Every afternoon my ffiend takes it for a walk. Jack likes the

walk in the park very much.

     One Sunday afternoon a man came to visit my friend. He stayed a long time. He talked and talked.

Soon it was time for my friend to take Jack for his walk. Jack worried about this. It walked around the

room several times and then sat down in front of the visitor and looked at him, but he kept on talking.

Jack couldn't stand it any longer. He went out of the room and came back a moment later. He sat

down again in front of the visitor, holding the visitor's hat in his mouth. Seeing this, the visitor couldn't help

laughing. He stood up and said good-bye to my friend in a hurry.

根据短文内容，完成下列句子。

1. The dog, Jack,liked            very much in the park.

2. Every             my friend takes the dog for a walk.

3. Jack sat down again in front of             holding the visitor's hat in its mouth and looked at him in order

    to tell the visitor that it was time for him to say good-bye.

4.The second paragraph tells us that             is very clever.

经批准单独设置管理机构的建设单位，为建设项目筹建、建设、验收等工作所发生的费用是( )。

A．建设管理费
B．合同条款费
C．前期工作费
D．专项用款

鹅绒、鸭绒等填充物的蓬松度越高、保暖性能越好。

防火卷帘的控制方式主要有（）。

A.自动控制

B.消防控制室操作

C.手动功能

D.机械控制

E.温度（易熔金属）控制功能