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【简答题】
TCP头部中有哪些标识位参与TCP三次握手？
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】We're just trying to teach a point ____ both sides will sit down together and talk. [ ]
A.
where
B.
that
C.
when
D.
which
【简答题】计算机操作系统经历了如下十个发展过程:
【单选题】受体拮抗药(阻断药)的特点是
A.
无亲和力，无内在活性
B.
有亲和力，有内在活性
C.
有亲和力，有较弱的内在活性
D.
无亲和力，有内在活性
E.
有亲和力，无内在活性
【单选题】听力原文：Where do we store the extra chairs? (A) Please, sit anywhere you like. (B) Behind the reception area. (C) No, he's at the store. (12)
A.
B.
C.
【单选题】No sooner ____ down ____ we found it was time to go.
A.
did we sit; than
B.
had we sat; than
C.
did we sit; when
D.
had we sitten; when
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