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建安工程费主要包括

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预备费主要包括

1.在所有过渡元素中，熔点最高的金属是熔点最低的是，硬度最大的是，密度最大的是，导电性最好的是，耐海水腐蚀的是。（填写元素符号）

Listen to the recording and fill in the blanks with the information (words or phrases) you have heard.Roshen Jamal is in class right now in her bedroom.It is very useful for us because we couldn't finish all (Q1) at school, and now we are completing them with the teachers.Many schools have been able to migrate classes (Q2) quickly, as schools worldwide close their doors to try to halt the spread of the coronavirus contagion. While more than half of the students around the world are out of school, some can attend remotely where they have adequate technology.Our teachers are coming to the school (Q3) . They come in one after one or two together and they're providing their lessons to the students.Well Roshen says she even prefers some of her online classes to the in-person lectures.With this I have a recorded video and if I didn't understand something then I repeat only that part for myself.Ali says the school wants to accommodate every student even those who can't view their class (Q4) .In case the student was not present, then the lesson that was explained to the students will be uploaded (Q5) to the students' website.The U.S. is slowly following suit as cases of COVID-19 have increased there. But for parents there are (Q6) .So how is it that our young children in Seattle public school can just run a mark, because parents have to work. The school is not holding these kids accountable for finishing school. We're talking about high schoolers. So you can't tell high schools what they do.As much as were looking after them now and we're okay in the early stages, there is that feeling of how much longer can we (Q7) that for.As schools remain closed, teachers and administrators around the world will have to get (Q8) . The adjustment for schools and pupils is easier for some, more difficult for others, but a worldwide flu outbreak that has rapidly spread demands (Q9) , separating students, teachers and other education professionals from each other.So far Roshen is (Q10) it.

诊断早期肺源性心脏病的主要依据是

A. 发绀
B. 呼吸困难
C. 两肺干湿罗音,肺气肿体征
D. 肺动脉高压及右心室增大体征
E. 高碳酸血症