“O”形圈一般不能用于环境脏和多磨粒的地方，以及润滑油稀少和（）的情况下。A、转速极

Leave your key with a neighbor         you lock yourself out one day.

A．ever since

B．in case

C．as usual

D．soon after

烧伤休克期微血管变化经过（）

A.微血管收缩到痉挛到扩张

B.微血管痉挛到扩张到痉挛

C.微血管麻痹到扩张到痉挛

D.微血管痉挛到扩张到麻痹

E.微血管痉挛到变性到扩张

未满10岁的儿童具有（）

A.诉讼权利能力

B.诉讼行为能力

C.限制诉讼权利能力

D.限制诉讼行为能力

目前复合材料主要用来制作下列哪些部件？（）

A.涡轮叶片

B.整流罩

C.襟翼、副翼

D.客舱地板

Keith Keeley, an associate at Friedman, Harris, and Levinsky LLC, was requested by a Managing Director of the firm to help construct the consumer price index (CPI). Keeley sought to determine which goods and services to include in the index by observing what a typical U. S. household purchases. He then took a large survey of individuals to determine what percentage of their disposable income they spend on each of the items and used these percentages as the weights for the major categories in the CPI. The steps that Keeley undertook are all part of which stage in constructing the CPI index（）

A. Select the CPI basket.

B. Calculate the CPI.

C. Conduct the monthly price survey.