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【简答题】
甲、登上同样高度的楼层，甲重400N，500N．若甲上楼用20s，乙上楼用10s，则甲、做功之比为______，做功的功率之比为______．
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【简答题】任务型阅读 Hello! I'm Linlin. I'm a girl. I am twelve years old I'm short and slim. I am Chinese. Now I am learning English in London, England. I like English very much. There are six people in my family. ...
【单选题】___________ that I want to eat another two.
A.
Such delicious cakes are they
B.
So delicious they are cakes
C.
Such delicious cakes they are
D.
So delicious cakes they are
【简答题】任务型阅读。 Hello! I'm Linlin. I'm a girl. I am twelve years old I'm short and slim. I am Chinese. Now I am learning English in London, England. I like English very much. There are six people in my family....
【单选题】____the mooncakes are! A.How delicious B.How a delicious C.What delicious D.What a delicious
A.
How delicious
B.
How a delicious
C.
What delicious
D.
What a delicious
【单选题】Would you like ______? [ ]
A.
something delicious
B.
delicious something
C.
anything delicious
D.
delicious anything
【单选题】The restaurant serves________wine.
A.
French delicious white
B.
delicious white French
C.
white delicious French
D.
delicious French white
【单选题】What ______ this is!
A.
delicious coffee
B.
a delicious coffee
C.
delicious a coffee
D.
the delicious coffee
【单选题】下面关于OSI 参考模型各层功能的说法错误的是( )
A.
物理层涉及在通信信道(Channel)上传输的原始比特流,它定义了传输数据所需要的机械、电气功能及规程等特性。
B.
网络层决定传输报文的最佳路由,其关键问题是确定数据包从源端到目的端如何选择路由。
C.
传输层的基本功能是建立、维护虚电路,进行差错校验和流量控制。
D.
会话层负责数据格式处理、数据加密等。
【简答题】I am combining the milk and cream into one container.
【单选题】钢构件的受剪连接中栓钉类型不同，孔洞对构件强度削弱的程度不同。孔洞对构件强度削弱最小的是()
A.
普通螺栓连接
B.
摩擦型高强度螺栓连接
C.
承压型高强度螺栓连接
D.
铆顶连接
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