问题 单项选择题 B型题

评价肺通气功能较好的指标是()

A.肺活量

B.时间肺活量

C.每分通气量

D.肺总量

E.肺泡通气量

答案

参考答案:B

解析:每分通气量:每分钟进入或呼出的气体总量,等于潮气量与呼吸频率的乘积;由于肺活量不限制呼气的时间,不能充分反映肺组织的弹性状态和气道的通畅程度,因此,用用力肺活量即时间肺活量来衡量肺通气功能状态。

单项选择题

某公司想了解一下其产品的需求情况,为此他们组织了一次市场调研活动,按照调研计划,该企业首先进行了一次问卷调查,他们选取了北京、上海两个城市作为代表城市。在这两个城市中,确定这次市场调研的样本数为10000个,并通过间接渠道搜集了有关产品消费者的数据资料。并据此将其分为VIP消费者1000个,高级消费者3000个,普通消费者6000个。他们向消费者所提供的问卷中,问答项目达几百个,而且十分具体。该调查所获得的数据被存入计算机,进行详细的分析。此外,该公司为了改进其刚刚研制成功的产品,还邀请消费者在产品的销售地试用这种新的产品,并且对新产品进行评价,从他们那里收集各种各样改进的意见。该公司担心消费者有时不能提供准确的信息,因此,市场调查人员经常亲自逛市场,“偷听”消费者购买时的对话,或者干脆装扮成消费者,四处探听店员和顾客对产品的意见。在亲自获取市场信息的同时,该公司还把其他部门所提供的市场分析进行加工和整理,用以补充市场调查所获取信息的不足。这些从公开出鞍自骑、报纸、杂志、政府和有关行业获取的统计资料,为该企业了解整个市场的宏观信息提供了帮助。来自消费者的信息成千上万,如何分析研究,取其精华,该公司有其独特的方法。他们把所有信息分为两类,一类是期望值高的信息,既希望商品达到某种程度,或希望出现某种新产品;另一类是具体的改进建议。该公司十分重视前者,这类信息虽然没有具体意见,甚至很模糊,却反映了消费者的期望,是新产品开发的重要启示,而具体的改进意见一旦和高期望值信息结合起来,则能起到锦上添花的作用。问题:

()是其他抽样方法的基础,其他抽样方法也都是从这种方法推演而来的。

A.简单随机抽样

B.判断抽样

C.等距抽样

D.分群随机抽样

阅读理解

Cricket

About the game:

Cricket is a game played between two teams, generally of 11 members each. Essentially, it is single combat, in which an individual batsman does battle against an individual bowler, who has helpers known as fielders. The bowler throws the ball from one end of the 22-yard pitch in an attempt to dismiss (send out) the batsman by hitting a target known as the wicket at the other end, or by causing the batsman to hit the ball into the air into a fielder's grasp. The batsman attempts to defend the wicket with the bat and to score runs, by striking the ball to the field boundary, or far enough from the fielders to allow the batsman to run to the other end of the pitch before the ball can be returned. There are always two batsmen on the field, each to take a turn as required. When all but one of the batting team, altogether eleven of them, have been dismissed, the teams' roles are switched. After all the players required to bat on both sides have done so either once or twice (which can take from a few hours to five days) the total number of runs accumulated determines the winner. But sometimes there isn't one.

Important terms of cricket:

Batsman: A player who uses a bat to hit, or guide the ball after it has been bowled, usually for the purpose of scoring runs.

Boundary: Indicates the outer limit of the playing area.

Bowler: Refers to a player who’s primarily good at throwing a ball to a batsman. The basic goal is to get the ball past the batsman and break the wicket behind him with it and thus cause the batsman to be dismissed.

Catch: If a fieldsman catches a struck ball before it touches the ground, that is a catch and the batsman is out.

Fielder: A player placed within the field, with the object of stopping the batting team from scoring runs, also called “fieldsman”.

Four: If the ball is hit to bounce or roll over the boundary, this is a "boundary four"; four runs are added.

Run: The method of scoring during a game of cricket. Also refers to a single unit of score.

Six: If the batsman hits the ball clear over the boundary on the fly, six runs are added to the score.

Umpire: A person appointed to rule on plays in cricket.

64. What’s the right order of the four kinds of people (1—4 ) on the cricket ground (see picture on the right ) ?

A. bowler; umpire; batsman; fielder          B. batsman; umpire; fielder; bowler

C. fielder; bowler; batsman; umpire          D. bowler; umpire; fielder; batsman

65. What happens when the batsman hits the ball, which first touches the ground inside the pitch and rolls quickly over the boundary to one of the viewers outside the cricket ground?

A. The batsman gets dismissed.             B. The batting side gets four runs.

C. The batting team gets six runs.           D. The bowler’s team gets four runs.

66. We can learn from the passage that ________.

A. the side which has all its batsmen dismissed wins the game

B. the side which dismisses all batsmen of the other side wins the game

C. the side which gets more runs than the other side wins the game

D. the side which dismisses more of the other side’s batsmen wins the game