有①维生素C、②蛋白质、③生石灰、④尿素、⑤硝酸钾、⑥铁粉六种物质中，可用来做食

文化变迁的动力可能产生于( )

A．社会内部

B．社会外部

C．另一个社会

D．发现

E．发明

属于施工组织总设计的编制依据有()。

A.建设地区基础资料

B.工程的施工图纸及标准图

C.有关的标准、规范和法律

D.有关技术新成果和类似建设工程项目的资料和经验

E.施工组织总设计对本单位工程的工期、质量和成本的控制要求

要求发包人补偿费用损失，调整合同价格的索赔是( )。

A．工期索赔

B．费用索赔

C．道义索赔

D．合同内索赔

Which statement concerning reserve sources of energy for GMDSS is FALSE（）.

A.While the ship is at sea，there must be available at all times a supply of electrical energy sufficient to operate the radio installations and to charge any batteries used as part of a reserve source of energy

B.Both the VHF and MF/HF installations must be simultaneously supplied

C.A means of ensuring a continuous supply of electrical power must be provided to all GMDSS equipment that could be affected by an interruption in power

D.If a UPS or equivalent is used to supply power to the ship's GPS receiver or other source of positional information，a means must be provided to ensure the continuous supply of the information in the event of a failure to the ship's main or emergency source of power

哪个是无菌罐冷却水阀（）。

A.V135

B.V142

C.V143