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听力原文:M: Hi, Janet, you are so lucky to be done with your final exams and term papers. I still have two more finals to take? W: Really? M: Yeah, So what are you going to do this summer, anything special? W: Well, actually yeah. My parents have always liked taking my sister and me to different places. You know, places with historical significance. I guess they wanted to reinforce the stuff we learned in school about history. Oh so where arc you going this summer? M: Well, this summer it's finally going to be Gettysburg. W: Finally? You mean they never took you there yet? I mean Gettysburg is probably the most famous civil war site in the country. It's only a couple of hours away. I think that would be one of the first places that they've taken you. I have been there a couple of times. M: We were going to go about ten, well, no, it was exactly ten years ago, but I don't know, something happened, I cannot remember what. W: Something changed your plans? M: Yeah, don't ask me what it was, but we ended up not going anywhere that year. I hope that doesn't happen again this year. I wrote a paper about Gettysburg last semester for a history class. I was talking about the political situation in the United States right after the battle at Gettysburg. So I'm eager to see the place. (20)
A.
The final exams.
B.
Their summer vacations.
C.
History term paper.
D.
The relationship between war and politics.
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【单选题】一批货物的价值为20000元,托运单保价声明价值为10000元,保价费率为4‰,该票货物应交保价费为( )。
A.
40元
B.
80元
C.
400
D.
800
【单选题】活塞的最大磨损部位一般是在什么部位?( )
A.
顶部
B.
头部
C.
裙部
D.
环槽
【单选题】关于气缸磨损,下述说法错误的是( )。
A.
一般情况下,发动机工作侧压力引起气缸横向磨损
B.
连杆弯曲引起气缸纵向磨损
C.
气缸磨损的一般规律是沿气缸轴向呈上小下大的圆锥形,沿气缸径向呈不规则的椭圆状
D.
气缸磨损最大部位在活塞上止点第一道活塞环对应气缸的位置处
【简答题】近年来,以( )为基础、基于银行卡支付的移动支付开始得到发展。A. 信息 B. 短信 C. 彩信 D. 飞信
【判断题】活塞的最大磨损部位一般是在活塞裙部。
A.
正确
B.
错误
【多选题】关于气缸磨损,下面说法正确的是:
A.
在正常情况下,气缸磨损很均匀
B.
在活塞环运动区域内呈上大下小的不规则锥形磨损
C.
气缸沿圆周方向的磨损形成不规则的椭圆形
D.
气缸径向最大磨损部位一般在前后或左右方向
【单选题】近年来,以( )为基础、基于银行卡支付的移动支付开始得到发展。
A.
飞信
B.
信息
C.
短信
D.
彩信
【判断题】活塞的最大磨损部位一般是在活塞环槽处。
A.
正确
B.
错误
【多选题】常见的数据类型有
A.
一般文件
B.
关系数据、数据仓库的数据
C.
事务数据、时间序列数据
D.
文本数据和空间数据
【单选题】下列描述不正确的是?( )
A.
气缸孔沿轴线方向的磨损呈上小下大的倒锥形,磨损最大部位在活塞处于下止点时第一道气环对应的气缸壁位置。
B.
气缸在第一道气环上方因无磨损而形成明显的“缸肩”。
C.
气缸径向磨损形成不规则的椭圆形,磨损最大部位一般在前后或左右方向。
D.
气缸径向磨损是由于曲轴轴向转动和连杆传递给或活塞的侧向力造成的。
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