不属于项目准备阶段咨询工程师的主要工作的是( )

多项选择题按网络拓扑结构分，网络可分为（）网络等。

A、星型
B、树型
C、总线
D、分组交换

单项选择题按照合同自由原则,当事人双方可以在法律规定的范围内,自由约定合同的免责条款。( )

单项选择题合同权利义务的终止,合同中关于解决争议方法条款也随之终止。( )

单项选择题某公司在当地电视节目上发出一条广告,称有一套大型机器设备欲出售,广告最后声明“该设备将售与最先支付现金或最先开来信用证的人”。该广告为( )。

单项选择题进货时产品符合质量要求,销售时产品出现缺陷,销售者要承担责任。( )

单项选择题企业向国家质量监督管理部门申请产品质量认证应遵循( )原则。

单项选择题根据我国产品质量法的规定,下列不属于产品的是( )。

单项选择题Shortly after September 11th, President Bush's father observed that just as Pearl Harbor awakened this country from the notion that we could somehow avoid the call of duty to defend freedom in Europe and Asia in World War Two, so, too, should this most recent surprise attack erase the concept in some quarters that America can somehow go it alone in the fight against terrorism or in anything else for that matter.But America's allies have begun to wonder whether that is the lesson that has been learned—or whether the Afghanistan campaign's apparent success shows that unilateralism works just fine. The United States, that argument goes, is so dominant that it can largely afford to go it alone.It is true that no nation since Rome has loomed so large above the others, but even Rome eventually collapsed. Only a decade ago, the conventional wisdom lamented an America in decline. Bestseller lists featured books that described America's fall. Japan would soon become 'Number One'. That view was wrong at the time, and when I wrote 'Bound to Lead' in 1989, I, like others, predicted the continuing rise of American power. But the new conventional wisdom that America is invincible is equally dangerous if it leads to a foreign policy that combines unilateralism, arrogance and parochialism.

单项选择题内部装修材料燃烧性能分级A（）、B1（）、B2可燃性、B3易燃性。

A、不燃性；难燃性
B、难燃性；不燃性
C、非燃性；燃烧性
D、燃烧性；非燃性

多项选择题防火门按耐火极限分为三级：甲级耐火极限（）、乙级耐火极限（）、丙级耐火极限（）。

A.1.50h
B.1.00h
C.0.70h
D.0.50h