问题
问答题
工程项目竣工结算的依据有哪些
答案
参考答案:工程项目竣工结算的依据有:
(1)承包合同,包括中标总价;
(2)合同变更的资料;
(3)施工技术资料;
(4)工程竣工验收报告;
(5)其他有关资料。
工程项目竣工结算的依据有哪些
参考答案:工程项目竣工结算的依据有:
(1)承包合同,包括中标总价;
(2)合同变更的资料;
(3)施工技术资料;
(4)工程竣工验收报告;
(5)其他有关资料。
完形填空。 | ||||
In the past all letters were sent by train or ship. Now most letters are __1__ sent by train or ship, but some are sent by air. You send a letter __2__ so that your friend may receive it sooner. A letter __3__ about twelve days to go from England to India by train or by ship. A letter can get to India by air __4__ five days now, but __5__ the time may be made shorter. __6__ people were afraid to send letters by air. They thought that the plane might fall and their friends might not receive the letter. So they sent two letters: one letter by air and __7__ by train or ship. They wanted to __8__ that the letters would be received. Planes are now almost as safe __9__ trains or ships. __10__ letters are sent by air, | ||||
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如图是一款数码相机的电池的一些资料.
根据右面提供的信息以及对数码相机工作过程的介绍,回答相关问题:
(1)、数码相机的电源打开后,就处于待机状态,这时要消耗一定的电能;拍摄时,拍摄与处理数据所消耗的电能就更大.假设用一个充满电的电池作电源进行拍照,每5min拍一张照片,相机使用过程中的平均工作电流
是0、2A.请估算一节充满电的电池最多可以拍多少张照片?
(2)、对一个电能全部耗尽的这种电池进行完全充电,充电的效率多大?
名称 | 充电式锂离子电池 |
容量 | 2200mAh |
标称电压 | 3.7V |
充电电压 | 4.2V |
充电模式 | 恒流/恒压 |
完全充电 | 2200mA/4.2v,2.5h |
最大持续放电电流 | 3300mA |
循环寿命 | 500次 |
工作环境 | -20℃-60℃ |