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搜题
【单选题】
能与水完全互溶的溶剂是
A.
正丁醇
B.
石油醚
C.
三氯甲烷
D.
丙酮
E.
乙酸乙酯
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举一反三
【单选题】对于平面 α 、 β 、 γ 和直线 a 、 b 、 m 、 n ,下列命题中真命题是( )
A.
若 a ⊥ m , a ⊥ n , m ⊂ α , n ⊂ α ,则 a ⊥ α
B.
若 α ∥ β , α ∩ γ = a , β ∩ γ = b ,则 a ∥ b
C.
若 a ∥ b ,, b ⊂ α ,则 a ∥ α
D.
若 a ⊂ β , b ⊂ β , a ∥ α , b ∥ α ,则 β ∥ α
【简答题】Please list the basic functions of WTO.( )
【单选题】若a,b是异面直线,且a∥平面α,则b与α的位置关系是( )
A.
b∥α
B.
相交
C.
b⊂α
D.
b⊂α、相交或平行
【简答题】[Ex. 4] Fill in the blanks with the words given below. business; meet; resource; stage; responsible; security; data; network; retailers; requirements; How to Handle Customer Financial Data PCI complia...
【单选题】给出下列关于互不相同的直线l、m、n和平面α、β、γ的三个命题: 1若l与m为异面直线,l⊂α,m⊂β,则α∥β; 2若α∥β,l⊂α,m⊂β,则l∥m; 3若α∩β=l,β∩γ=m,γ∩α=n,l∥γ,则m∥n. 其中真命题的个数为( )
A.
3
B.
2
C.
1
D.
0
【简答题】A. ensure B. security C. difficult D. virtual E. easy F. community With the increasing popularity of the Internet as a 1 marketplace, consum...
【单选题】已知 α , β 是平面, m 、 n 是直线,给出下列表述: 1 若 m ⊥ α , m ⊂ β ,则 α ⊥ β ; 2 若 m ⊂ α , n ⊂ α , m ∥ β , n ∥ β ,则 α ∥ β ; 3 如果 m ⊂ α , n ⊄ α , m , n 是异面直线,那么 n 与 α 相交; 4 若 α ∩ β = m , n ∥ m ,且 n ⊄ α , n ⊄ β ,则 n ∥ α ...
A.
1
B.
2
C.
3
D.
4
【单选题】The examples of Virtual Vineyards, Amazon.com, and other pioneers show that a Web site selling the right kind of products with the right mix of interactivity, hospitality, and security will attract on...
A.
谓语
B.
宾语
C.
定语
D.
补语
【简答题】All best__________ learned will be available on the online stadia__________ system. It will be __________ regularly, by contributors, in sports legislation, physical security, and cyber security and ...
【简答题】Online security will not be not a problem ______ long as you never give anyone your password or security details.
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