具有祛风湿，止痛，解表作用的药物是（） A.独活 B.木瓜 C.防己 D.秦艽 E.

微生物再生命活动过程中会分泌一种（），利用它可以把有机商品中的蛋白质、纤维素、糖等分解为简单的物质，加以吸收和利用。

A.酸

B.碱

C.钙

D.酶

根据短文内容和首字母提示,把所缺单词填写在短文中相应的横线上,使句意完整正确.

A man w小题1: mending a street light when he s小题2: a  beautiful woman and three children get i-小题3: a car which was in the garden of a house near him. He saw that the car had a flat tyre and tried to tell the w 小题4:, but it was late-----she was already driving the car out of the garden and into the busy s小题5:. When she got there,she stopped the car on the side o小题6: the street, got out and looked at the f小题7:  tyre. The children still stayed in the c小题8: .Very soon another car stopped, and the driver was r小题9: to help her. The young woman thanked him for his help and the man changed the tyre for h小题10: .

证券公司应当建立完备的协助开户制度，对客户的开户资料和身份真实性等进行审查，向客户充分揭示期货交易风险，解释期货公司、客户、证券公司三者之间的权利义务关系，告知期货保证金安全存管要求。然后代理客户直接与期货公司签订期货经纪合同，办理开户手续。( )

施工机械使用费指使用施工机械作业所发生的( )。

A．机械使用费+机械安装费+机械拆卸费+机械进出场费用
B．机械使用费
C．机械使用费+机械安装费+机械拆卸费
D．机械使用费+机械安装费

钢的浇注方式以（）属于发展方向。

A.连铸

B.模铸

C.坑铸

D.车铸