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【单选题】
悬架根据结构不同可分为独立式和非独立式,下列属于非独文式的是( )
A.
大多数轿车
B.
面包车
C.
越野车
D.
客车
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【单选题】塔式起重机主要部件和安全装置应进行经常性检查,每()不少于一次,并应有记录;使用周期超过()时,应进行一次全面检查,合格后方可继续使用。
A.
周、一个月
B.
月、一年
C.
季、一年
D.
6个月、一年
【简答题】2005年诺贝尔化学奖授予三位在绿色化学领域有突出成就的科学家,绿色化学核心是实现零排放,而加成反应和化合反应实现了零排放.重氮甲烷在有机合成中有重要应用,可以用来合成甲醚、羧酸、酯类等重要有机产物.重氮甲烷的分子结构可以表示为  CH 2 -N≡N,在其分子中,碳原子和氮原子之间的共用电子对是由氮原子一方提供的. (1)重氮甲烷的电子式为______. (2)重氮甲烷在受热或光照时容易分解放出氮...
【单选题】听力原文:M: May I help you? W: Yes, I want to buy some shoes to replace the ones I'm wearing. M: What's wrong with them? W: They are too old and shabby. M: I can see they have simply been worn out. Would ...
A.
Similar to what she wears.
B.
A bit uncomfortable.
C.
A little bit dressier.
D.
A little less casual.
【单选题】听力原文:M: May I help you? W: Yes, I want to buy some shoes to replace the ones I'm wearing. M: What's wrong with them? W: They are too old and shabby. M: I can see they have simply been worn out. Would ...
A.
They were worn out.
B.
They were dirty.
C.
They were of a dull colour.
D.
They were out of style.
【简答题】深度国际的覅就
【简答题】A.May I help you? B.What's wrong? C.I'm glad to see you.
【单选题】听力原文:M: Good morning, may I help you? W: Yes, I'm looking for a light blue sports jacket. Q: Where does the conversation take place? (10)
A.
At a shop
B.
At a restaurant
C.
At a cinema
D.
At the post office
【简答题】某施工单位施工时使用了F0/23B型塔式起重机,由于违反起重吊装作业的安全规定,严重超载,造成变幅小车失控,塔身整体失稳倾斜,将该楼八层作业的2名工人砸死,起重机司机受重伤。请根据以上背景情况回答下列问题: 塔式起重机的主要部件和安全装置等应进行经常性检查,()不得少于一次,并应有记录。(单项选择题) A.每周 B.每月 C.季度 D.每半年 某施工单位施工时使用了F0/23B型塔式起重机,由于违...
【单选题】丁烷分子中,以 C 2 与 C 3 之间的 σ 键为键轴所形成的 4 种构象异构体:( I )对位交叉式;( II )部分重叠式;( III )邻位交叉式;( IV )全重叠式 。 按能量由低到高排序正确的是:( )
A.
( Ⅰ )( Ⅲ )( Ⅳ )( Ⅱ )
B.
( Ⅰ )( Ⅲ )( Ⅱ )( Ⅳ )
C.
( Ⅱ )( Ⅳ )( Ⅲ )( Ⅰ )
D.
( Ⅳ )( Ⅱ )( Ⅲ )( Ⅰ )
【单选题】听力原文:W: City utility department, how may I help you? M: Yes, I'm new here and trying to figure out how garbage and recycle collection work. My understanding is that garbage is collected on Wednesdays,...
A.
House waste collection
B.
Garbage collection times
C.
Recyclable materials
D.
Collection procedures
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