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【单选题】
泥水式顶管机主要包括主机、后顶装置、泥水平衡系统、泥水处理系统和电气控制系统,下列描述不正确的是()
A.
后顶装置的主要功能是完成的顶进
B.
泥水处理系统主要功能是通过泥水处理设备的处理,将泥水的比例和粘度调整到一定值,通过泵将其送至顶管机中使用,同时将排泥管排放的泥水进行分离
C.
主机的功能是通过加压的泥水来平衡开挖面的土体
D.
泥水平系统具有2种功能,其中一个是将切削下来的土体在泥水仓中混合后通过泵经管路输送至地面
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【简答题】Answer the questions 1.What impression does the writer try to give by say," the preacher preached a wonderful rhythmical sermon, all moans and shouts and lonely cries and dire picture of hell , and th...
【单选题】女性,40岁.患慢性风湿性心脏瓣膜病,除具有原发症状外,突然出现一侧下肢剧痛,动脉搏动消失,局部皮肤苍白、发凉、紫绀,应考虑是
A.
脑栓寒
B.
肢体栓塞
C.
下肢静脉炎
D.
下肢动脉栓塞
E.
肺栓塞
【单选题】Dialogue One Dialogue one 1. What does" a friend in need is a friend indeed” mean?
A.
This means that a friend who helps you when you really need help is a true friend.
B.
This means that a friend who is willing to be with you when you are happy is a true friend.
C.
This means that a friend who likes to lend money to you is a true friend.
D.
This means that a friend who likes to share his wonderful things with you is a true friend.
【单选题】What does "common myth" mean in the passage?
A.
A traditional story or tale.
B.
A popular but wrong idea about something.
C.
A famous and wonderful idea about something.
【单选题】女性, 40 岁 . 患慢性风湿性心脏瓣膜病,除具有原发症状外,突然出现一侧下肢剧痛,动脉搏动消失,局部皮肤苍白、发凉、紫绀,应考虑是
A.
脑栓塞
B.
肢体栓塞
C.
下肢静脉炎
D.
下肢动脉堵塞
E.
肺栓塞
【简答题】常温下,用0.1000 mol/L NaOH溶液分别滴定20. 00 mL 0.1000 mol/L HCl溶液和20. 00 mL 0.1000 mol/L CH 3 COOH溶液,得到2条滴定曲线,如下图所示。 (1)由A、C点判断,滴定HCl溶液的曲线是_________(填“图1”或“图2”); (2)a=________mL; (3)c(Na + ) = c(CH 3 COO - )的点...
【简答题】Most shoplifters (商店扒手)agree that the January sales offer wonderful opportunities for the hard-working thief. With the shops so crowded and the staff so busy, it does not require any extraordinary tal...
【单选题】常温下,用0.1000 mol/L NaOH溶液分别滴定20.00mL 0.1000 mol/L盐酸和20.00 mL 0.1000 mol/L醋酸溶液,得到2条滴定曲线(如下图所示)以HA表示酸,下列说法正确的是(  )
B.
滴定盐酸的曲线是图2 B、达到B、D状态时,两溶液中离子浓度均为c(Na + )=c(A - )
C.
达到B、E状态时,反应消耗的n(CH 3 COOH)>n(HCl)
D.
当0mL< V(NaOH)<20.00mL时,对应混合溶液中各离子浓度由大到小的顺序均为c(A - )>c(Na + )>c(H + )>c(OH - )
【单选题】Directions: Listen to the dialogues and choose the right answers to the questions you hear. 1. What does" a friend in need is a friend indeed” mean?
A.
This means that a friend who helps you when you really need help is a true friend.
B.
This means that a friend who is willing to be with you when you are happy is a true friend.
C.
This means that a friend who likes to lend money to you is a true friend.
D.
This means that a friend who likes to share his wonderful things with you is a true friend.
【单选题】常温下,用0.1000 mol/L NaOH溶液分别滴定20.00mL 0.1000 mol/L盐酸和20.00 mL 0.1000 mol/L醋酸溶液,得到2条滴定曲线,如下图所示: 以HA表示酸,下列说法正确的是
A.
滴定盐酸的曲线是图2
B.
达到B、D状态时,两溶液中离子浓度均为c(Na + )=c(A — )
C.
达到B、E状态时,反应消耗的n(CH 3 COOH)>n(HCl)
D.
当0mL< V(NaOH)<20.00mL时,对应混合溶液中各离子浓度由大到小的顺序均为c(A - )>c(Na + )>c(H + )>c(OH - )
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