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【单选题】
对于机件的肋、轮辐、薄壁等实心圆杆状及板状结构,如按纵向剖切,肋板( ) 。A.
要画剖面符号
B.
要剖开
C.
不画剖面符号
D.
可不画出
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皮皮学刷刷变学霸
举一反三
【单选题】听力原文：W: What's all this glass doing on the floor? M: Look at the window and you'll see. The kids were playing basketball and Tommy failed to catch it. Q: What do we learn from the conversation? (3)
A.
Tommy fell to the ground and broke his glasses.
B.
The window was broken by the kids.
C.
The kids were playing with the glasses.
D.
Tommy failed in the basketball .
【单选题】--- Jones! Roy has broken the glass. --- Such things happen.
A.
What a pity!
B.
Never mind
C.
How come?
D.
What has become of him?
【单选题】下列的市场类型中,对厂商数目的排序正确的是( )
A.
完全竞争>寡头垄断>垄断竞争
B.
垄断竞争>寡头垄断>完全垄断
C.
寡头垄断>垄断竞争>完全竞争
D.
完全垄断>寡头垄断>完全竞争
【简答题】生命的基本特征是 、 、 、和 。
【简答题】SQL
Server 2016 是一个( )的数据库系统。 A:网状型;B:层次型;C:关系型;D:以上都不是;A. 网状型 B. 关系型 C. 层次性 D. 非关系型
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