皮皮学，免费搜题
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搜题
【单选题】
UDP通信的特点不包含以下哪一项?A.
UDP是非面向连接的协议，简单快速
B.
UDP通信的数据传输无需伙伴应答
C.
支持广播
D.
UDP通信在使用前需建立连接
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】公民下落不明，符合申请宣告死亡的条件，同一顺序的利害关系人，有的申请宣告死亡，有的申请宣告失踪，则人民法院应当宣告死亡。 ( )
【单选题】He asked his father ________?
A.
where it happens
B.
where did it happen
C.
how it happened
【单选题】He asked his father why he was not able to hatch chickens ______hens could.
A.
however
B.
while
C.
as
D.
although
【单选题】He asked his father . [ ]
A.
where it happens
B.
what was happen
C.
how it happened
D.
why was happen
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