消化性溃疡X线诊断的可靠依据是A．局部激惹 B．局部变形 C．龛影在胃腔轮廓之外 D

Many people like to travel by plane, but l don’ like it because an airport is usually far from the city. You have to get there early and wait for hours for the plane to take off (起飞) and it is often late. You can’t open the windows. You can’t choose the food. Planes are fast but they still take much time to go out of the airport and into the city.

I like traveling by train .I think trains are safe. Railway stations are usually in cities. When you are late for a train, you can catch another one. You can walk around in the train and open the windows .You can see many interesting things on your way. I know it takes a little more time.

I also like cars. You can start your journey whenever you want to, and you don’t need to get to a railway station or a bus stop. Also you can carry many things with you in a car. But sometimes there are too many cars on the road.

小题1:Why do many people like to travel by plane?                                                                     

A．Because it is fast.

B．Because it is safe.

C．Because you can walk around in the plane.

D．Because it is cheap.小题2:Which is not the good thing about the train?

A．It is safe.

B．It takes a little more time.

C．You can open the windows.

D．You can walk around in the train小题3:If you want to take a lot of things with you, what do you take to go out?

A．A bus.

B．A car.

C．A train.

D．A bike.小题4:What does the writer think of the plane, train and car ?

A．He thinks it takes a lot of time to go to and get out of the airport.

B．He likes to take a train because it takes a little more time.

C．He likes to take a car because he has a car.

D．He likes to take a plane because it’s fast.

一个正方体，棱长之和为24厘米，它的表面积是______平方厘米，体积是______立方厘米．

液压传动系统中，( )是执行元件。

A．液压泵

B．液压缸

C．各种阀

D．油箱

某工程项目为某市建设规划的重要项目之一，且已列入地方年度固定资产投资计划，概算已经主管部门批准，施工图及有关技术资料齐全。现决定对该项目进行公开招标，招标范包括土方基础工程、主体结构工程、设备安装及外墙装修工程，该项目基础工程包括地下室4层及挖孔桩。招标单位发布招标公告和资格预审通告后，省内外共有20家投标单位购买了资格预审文件并参加了资格预审，经招标工作委员会审定后，A、B、C3家单位通过了资格预审。随后招标单位向这3家投标单位发出了资格预审合格通知书和招标文件，接下来招标单位对这3家投标单位就招标文件所提出的所有问题统一作出书面答复。
在书面答复投标单位的提问后，招标单位又组织各投标单位进行了施工现场踏勘。在投标截止日期前10天，招标单位书面通知各投标单位，由于某种原因，决定将外墙装修工程从原招标范围内删除。
投标单位A在投标过程中，考虑到该工程地下室的施工需采用连续墙回封后，土方分层开挖，连续墙加设4～6层锚杆加固，土方开挖完毕后进行挖孔桩施工及地下室施工。而该工程地处繁华的商业区和密集的居民区，是交通十分繁忙的交通枢纽，采用爆破方法不太可行，因此在投标时将该方案的单价报得很低，而采用机械辅以人工破碎凿除基岩方案的报价较高。
投标单位B在送出投标文件后发现由于对招标文件的技术要求理解错误造成了报价估算有较严重的失误，遂赶在投标截止时间前10min向招标人递交了一份书面声明，要求撤回已提交的投标文件。

投标单位A运用了哪种报价技巧其运用是否得当

成荫公司原是一家国有企业，2005年内，发生了如下事项：
1．某法院因工作需要暂时借用成荫公司上一年的会计档案，对有关原始凭证做了摘录或复制。工作过程中，得到了公司的大力支持，经档案管理员张某签字，办理了详细的外借登记手续。
2．8月18日，成荫公司开出一张面额为10000元整的转账支票向某运输公司支付运费。次日运输公司向银行提示付款，银行发现该支票为空头支票，遂予以退票，并对该公司处以1000元的罚款。某运输公司要求成荫公司除支付其10000元的运费之外，还应当另外支付其2000元的赔偿金。
3．为了提高会计信息的披露效率，经公司管理层研究决定，公司以后凡是对外报送的财务会计报告均由财务科科长吴某签字、盖章后正式报送，以利于会计信息的及时披露。
请分析并简要说明理由：