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FAQ about the SITES Internship(实习) Program 1. What kind of internships does SITES offer? SITES (Smithsonian Institution Traveling Exhibition Service) offers internships in exhibition planning, public relations, marketing, and fundraising(筹款). 2. How much time does an internship take? An internship requires at least 20 hours per week. Some interns work full-time (40 hours per week). An internship may last between one and four months. 3. Can I explore more than one topic or skill? According to your interests and the needs of our organization, you may be involved in more than one project. 4. Who may apply? Individuals who have completed at least one full semester at an undergraduate college or university. Graduate students are also encouraged to apply. 5. Will I get paid for my internship? Because of limited funding, SITES internships are volunteer positions. 6. Where can I stay during my internship? See the Internship Housing Guide for reference. FAQ about the SITES Internship Program 1. SITES offers internships in exhibition planning, (46) , marketing and fundraising. 2. An internship will last one to (47) . 3. You can take part in more than one project, according to your interests and the needs of our organization. 4. People who have completed at least (48) at an undergraduate college or university can apply. 5. SITES internships are (49) as a result of limited funding. 6. To know where to stay during your internship, please see the (50) for reference.
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【多选题】( 多选 ) 对于分子动理论和物体内能的理解,下列说法正确的是 ( )
A.
.温度高的物体内能不一定大,但分子平均动能一定大
B.
.外界对物体做功,物体内能一定增加
C.
.温度越高,布朗运动越显著
D.
.当分子间的距离增大时,分子间作用力就一直减小
E.
.当分子间作用力表现为斥力时,随分子间距离的减小分子势能增大
【单选题】他是一名围棋棋手。 He is a ______ player.
A.
Chat
B.
Chess
【单选题】I'm so excited to meet you. May I introduce myself to you? ()
A.
Nice to see you.
B.
Sure.
C.
You are welcome.
【单选题】关于蒸汽在汽轮机中的能量转换说法错误的是( )。
A.
当一定温度和压力的蒸汽经过喷嘴叶栅时,将热能转换成蒸汽高速流动的动能
B.
当高速汽流经过动叶栅时,将势能转化为转子旋转的机械能,从而完成利用蒸汽热能驱动各种机械做功的任务
C.
蒸汽的热力势能转换成蒸汽的动能和蒸汽的动能转换成推动汽轮机转子旋转的机械功,这种能量转换是在喷嘴和动叶中共同完成的
D.
蒸汽在固定不动的喷嘴中流动,其压力降低,流速增加,将蒸汽的热力势能转换成动能
【简答题】Annie: Hi, Ben. _ . Ben: Great! I just went for a jog. I feel _ _ ! Annie: Good for you. Hey, I have something I want to give you. It ’ s an article I printed off the Internet. I thought you might be ...
【单选题】A: I have a last favor to ask you. Could you drive my daughter to the airport? B: ______
A.
Shall I get the ticket for her?
B.
Yeah, I like that.
C.
You bet I will.
D.
Sure, it'd be a pleasure.
【单选题】听力原文:S Excuse me. Professor Miller. Can I talk to you for a few minutes? I need to ask you about my classes. A Hello, Lisa. I know its a bit late, but Merry Christmas. Are you having problems with any...
A.
To sign up for a class.
B.
To get academic advice.
C.
To complain about her classes.
D.
To ask for permission.
【单选题】X年5月10日,某公路工程处第三项目经理部在某立交桥施工期间,对立交作业区域内原有厂房拆除过程中,发生了一起因被拆除的建筑物坍塌,导致2人死亡的事故。 建设单位委托第三项目部进行2000m 2 厂房拆除工程的施工,并要求6月底前拆完合同工期4个月,条件是第三项目经理部向建设单位上交3万元,拆除下来的钢筋由第三项目经理部支配。项目部又将此工程分包给M工程队,条件是以拆除下来的钢筋作为支付M的拆除施...
A.
从左到右逐层分段实施
B.
从上到下逐层分段实施
C.
从左到右立体交叉作业
D.
从上到下立体交叉作业
【多选题】以下说法正确的是 ( )
A.
.晶体有固定的熔点,非晶体没有固定的熔点
B.
.外界对物体做功,物体内能一定增加
C.
.布朗运动是悬浮在液体中的小颗粒的运动,它说明液体分子永不停息地做无规则热运动
D.
.当分子间的引力和斥力平衡时,分子势能最小
E.
.知道水蒸气的摩尔体积和水分子的体积,可计算出阿伏加德罗常数
【多选题】下列说法中正确的是 ( )
A.
.气体放出热量,其分子的平均动能可能增大
B.
.布朗运动不是液体分子的运动,但它可以说明分子在永不停息地做无规则运动
C.
.当分子力表现为斥力时,分子力和分子势能总是随分子间距离的减小而增大
D.
.第二类永动机不违反能量守恒定律,但违反了热力学第一定律
E.
.某气体的摩尔体积为 V ,每个分子的体积为 V 0 ,则阿伏加德罗常数可表示为 N A =
F.
答案 ABC 解析 气体放出热量,若外界对气体做功,温度升高,其分子的平均动能增大,故 A 正确;布朗运动不是液体分子的运动,但它可以说明液体分子在永不停息地做无规则运动,故 B 正确;当分子力表现为斥力时,分子力和分子势能总是随分子间距离的减小而增大,故 C 正确;第二类永动机不违反能量守恒定律,但违反了热力学第二定律,故 D 错误;某固体或液体的摩尔体积为 V ,每个分子的体积为 V 0 ,则阿伏加德罗常数可表示为 N A = ,而气体此式不成立,故 E 错误.
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