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【单选题】
下列哪项不是V形机的特点(  )
A.
可采用叉型连杆
B.
有较小的比重量
C.
缩短气缸间距和整机长度
D.
有较低的单机功率
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参考答案:
举一反三
【单选题】已知点 A(10,15,20),点 B(20,10,15), 点 A 在点 B 面。
A.
B.
【单选题】对象、类、继承和消息传递是面向对象的 4 个核心概念。其中对象是封装( )的整体。
A.
数据和行为
B.
要完成任务
C.
命名空间
D.
一组数据
【单选题】对象、类、继承和消息传递是面向对象的4个核心概念。其中对象是封装( )的整体。
A.
命名空间
B.
要完成任务
C.
一组数据
D.
数据和行为
【单选题】闭塞性周围动脉粥样硬化最典型的症状是:( )
A.
肢体肿胀
B.
皮下出血
C.
间歇性跛行
D.
皮肤溃烂
E.
肢体疼痛
【简答题】Beijing—(13, July) China sent up a new data relay satellite(数据中继卫星), Tianlian I-02, on Monday at the Xichang Satellite Launch Centre in South-western Sichuan province.The new satellite will promote th...
【单选题】It can be inferred from the passage that the satellite data scientists have collected over the past few decades
A.
provides more accurate records of changes in the earth's surface climate than previously existed
B.
have begun to conclusively establish a decline in the number of sunspots over the past two solar cycles
C.
are plagued with too many problems to conclusively establish them as more accurate than older historical records
D.
are a conclusive indicator of the effect of solar maxima on the earth's pre- industrial climate
E.
have been employed by scientists seeking to argue that the number of sunspots during solar minima are on the increase
【单选题】_______ is a term relating to sending data to a satellite.
A.
Uplink
B.
Upload
C.
Download
D.
Downlink
【简答题】A.Satellite data. B.Computers. C.Historical statistics. D.Information from NASA.
【单选题】已知点 A(10,15,20),点 B(20,10,15), 点 A 在点 B 边。
A.
B.
【简答题】用连接查询,列出商品的id,供应商名称。
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