窄沟道效应

尿石症的主要病机是：

A．阴虚湿阻

B．肾虚膀胱有热

C．湿热下注

D．气血淤滞

E．膀胱气化不利

吕思勉在《中国通史》“衣食”篇中提出：“以中西的服饰相较，大体上，自以中国的服饰为较适宜。现在的崇尚西装，不过一时的风气罢了。”材料正确表明作者的观点是 [ ]

A．外来侵略引起服饰变化

B．中国人不适宜着西装

C．传统服饰仍有生命力

D．中国服饰西方化

辅食添加应注意的问题不包括（）。

A.循序渐进

B.小量开始

C.由流质食物开始，逐渐过渡到半固体、固体食物

D.可同时加多种

E.必须严格按照书上推荐的方法、顺序、间隔等添加

中国印刷史上第一个学术团体—“中国印刷学会”成立于（）年。

A.1923

B.1932

C.1935

D.1953

While completing a project a project manager realizes be needs to decrease project costs. After researching his options, he comes up with the following choices. Which choice would DECREASE project costs ？（）

A．Change to component A from component B. Component A costs more to purchase but has a lower life cycle cost than B

B．Change task A to be completed by resource B instead of Resource C, Resource B is a more experienced worker

C．Move tasks B and H to occur concurrently, and take the risk of a 30% increase in the need for five more resources later

D．Remove a test from the project plan