执行下列二进制逻辑乘法运算（即逻辑与运算）01011001^10100111其运算结

The owner (buyer) of a project usually has the right to direct changes to the scope of work while the project work is being accomplished. Often, the owner will orally request a change and insist that the change be initiated immediately without the normal documentation (e.g.a change order). When the change be initiated without documentation ______.

A) the owner assumes all responsibility for paying for the change although the owner may at a later not want the change
B) the owner assumes responsibility for one-half the cost of the change until the documentation is completed and all at the same time
C) the project manager assumes all risk for the change, if initiated, until the documentation is received
D) the project manager assumes only the risk of misinterpreting the owner's oral change directive, while the owner assumes responsibility for paying for the request change

建设工程中，以一定的方式中断风险源，使其不发生或不再发展，从而避免可能存在的潜在损失，这是一种（）的风险对策。

A、保险转移

B、风险回避

C、损失控制

D、风险自留

以下关于数控机床常用的维修方法错误的是（）。

A．功能程序测试法

B．参数检查法

C．整体升温法

D．自诊断功能法

压强增大时，其在水中的溶解度不受影响的是[ ]

A、NH₃

B、SO₂

C、CO₂

D、KCl

关于聚集性不明原因肺炎相关性下列哪项正确（）

A、病例发病前曾共同居住、工作、生活

B、曾暴露于同一环境中

C、有过密切接触

D、疾病预防控制专业人员认为有流行病学相关性的其他情况