下列期货品种中，通常采取实物交割方式的有( )。 A．外汇期货 B．商品期货 C．

关于逻辑框架法，正确的说法是（）。

A．逻辑框架法可以用于项目周期多个阶段的分析与评价

B．逻辑框架矩阵的核心是事物层次之间的逻辑顺序关系

C．逻辑框架法不包括利益相关者分析和问题分析

D．逻辑框架法在项目实施阶段作为编制项目计划的工具

闭锁心理对我们成长的危害可能会有

①使我们变得自信

②使我们变得胆小

③使我们变得沉默寡言

④使我们变得性格孤僻

⑤使我们变得性格开朗

A．①②③

B．②③④

C．①③⑤

D．①④⑤

17.5吨比20吨少______%．

In the following passage, there are 25 blanks representing words that are missing from the context. You are to put back in each of the blanks the missing word. Write your answers on the ANSWER SHEET. The time for this section is 25 minutes.
Of all the employed workers in the United States, 12.5 million are part of a temporary workforce. The United States Bureau of Labor Statistics counts 9.2 percent of workers as those who have (1) they term "alternative employment arrangements." The government predicts that temporary staffing agencies (2) experience growth of 49 percent by 2010. If numbers increase at the rate (3) , these companies will add 1.9 million new jobs by 2010. That’s more than any (4) industry.
Temporary workers were the first ones to be affected by the recent economic recession, but they are (5) to be the first to regain positions as the economy picks up and companies work to rebuild. Employers use temporary workers as a resource because (6) offer
flexibility and come at a low cost. Many temporaries are categorized as "independent contractors" instead of employees, (7) allows the employer to avoid (8) certain taxes. Because they are not required to offer benefits to temporary workers, companies can save a great deal of money by hiring temps. Usually, temporary workers can qualify (9) benefits if they work for a staffing company for a certain length of time. Most temps, however, do not continue with one company long (10) to qualify for them because they regard the position as a step on the ladder to a (11) position later.
According to Richard Wahlquist, president of the American Staffing Association, 75 (12) of temporary workers hope for transition out of the temporary staffing category (13) a period of time. Wahlquist finds that temporary workers spend about 11 weeks on various assignments before their (14) out of the temporary workforce. Many use temporary positions to gain experience and skills (15) they move on to better jobs. Wahquist says that the temp workforce as a whole turns (16) 400 percent each year.
Tom Dilworth, research director at the Employment Policies Institute, explains (17) some workers like having temporary jobs (18) it affords them a great deal of elasticity with time and everything. Some temps only have a limited (19) of time to work and temp agencies can help coordinate jobs to fit their schedules. Other sometimes-employees use temporary jobs to get an (20) to a company from the inside, to get a foot in the door of a certain business or career. (21) others take temporary positions in hopes their employers will change them over to permanent positions eventually.
Nearly all the industries in the United States use temporary workers. (22) to Tim Costello, coordinator of the North American Alliance for Fair Employment, the growth of temporary labor threatens (23) job security of permanent workers who fear replacement,as well as the temps who are more accustomed to turnover. He predicts that there will continueto (24) a gradual shift from permanent employees to contingent staffing, and that such a (25) in workplace demographics will "lead to lower wages, poorer working conditions, and more instability."

清河泵站设计装机流量150m³/s，出口防洪闸所处堤防为1级。招标人对出口防洪闸工程施工标进行公开招标。有关招标工作计划如下：5月31日提交招标备案报告，6月1日发布招标公告，6月11日～15日出售招标文件，6月16日组织现场踏勘，6月17日组织投标预备会，7月5日开标，7月6日-10日评标定标。招标工作完成后，A单位中标，与发包人签订了施工承包合同。工程实施中发生如下事件：事件1：I-I段挡土墙（示意图如图2-8所示）开挖设计边坡I：I，由于不可避免的超挖，实际开挖边坡为1：1.15。A单位申报的结算工程为50×（S₁+S₂+S₃），监理单位不同意。事件2：原定料场土料含水量不能满足要求，监理单位指示A单位改变了挡土墙墙后填土料场，运距由1km增加到1.5km，填筑单价直接费相应增加2元/m³，A单位提出费用变更申请。

为满足I-I段挡土墙土方开挖工程计量要求，A单位应进行的测量内容有哪些？