气管插管时，如何确认导管已进入气管内 A．压胸部时，导管内有气流 B．人工通气时，可

阅读理解。

     A map is a picture of a place. There can be many different maps of the same place. A map cannot show

everything about a place. For a clear map, it must show a number of things. Here, you will get to make a map

which shows the things that make your community (社区) a special place to live in.

    Before you start drawing, make a list of the places and things in your community that you want to include

on your map. Think about places you often have to go to, places where your relatives and friends live and your

favorite places. How do you get there? What roads or paths do you take? What kind of things do you see along

the way? As you know, some maps are made to show locations and other maps show us how to get there.

They can also show the distances.

    Now, let's create a map of your community. On a large piece of paper, draw pictures of the places or the

things you decide to include on your map. Next, fill in the shapes of the places and roads in light colars. Using

darker colors, fill in the areas between the features and roads on your map to make your map more interesting

to look at. Every area of your map should be filled in with colors. When your map is finished, show it to your

friends or family members to see what they think of it.

异步电动机的接法为380/220，Y，d，是指当电源线电压为380V时，接成星形，电源线电压为220时接成三角形

募集资金直接投资于固定资产项目的，发行人根据重要性原则披露以下( )内容。

A．投资概算情况，预计投资规模，募集资金的具体用途，包括用于购置设备、土地、技术以及补充流动资金等方面的具体支出

B．产品的质量标准和技术水平，生产方法、工艺流程和生产技术选择，主要设备选择，核心技术及其取得方式

C．主要原材料、辅助材料及燃料的供应情况

D．投资项目可能存在的环保问题、采取的措施及资金投入情况

E．项目的组织方式、项目的实施进展情况

对于离子交换现象的解释，目前存在三种理论，即（）理论、（）理论和（）理论。各种理论有许多相似之处，但也存在较大的分歧，目前还不能统一。对于离子交换水处理过程来说，最适用的是（）理论。

下列离子交换树脂再生的步骤中，流程往7%己内酰胺水缓冲槽的是（）。

A、第1步：顶己

B、第2步：清洗

C、第4步：反冲洗

D、第24步：循环