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【单选题】
两台计算机之间利用电话线路传送数据信号时,负责模拟信号和数字信号转换必需的设备是( )。A.
调制解调器
B.
网卡
C.
中继器
D.
路由器
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【单选题】听力原文：M: I'm afraid I've got to be going now. I have to get up very early tomorrow morning. You know I will see my grandmother off at six a. m. at the airport. W: I won't keep you then. It was nice of ...
A.
He will drive his grandmother to the airport.
B.
He will meet his grandmother at the airport.
C.
He will send his grandmother to a wedding party.
D.
He will take his grandmother to the hospital.
【单选题】直线l过原点(0,0),且不过第三象限,则l的倾斜角α的取值范围是( )
A.
O度≤α≤90度
【单选题】对于飞猪旅行集市的管理，飞猪旅行集市管理规范有规定的，按照飞猪旅行集市管理规范执行；飞猪旅行集市管理规范未有规定的，按照（）执行。
A.
《淘宝网营销活动规则》
B.
《淘宝规则》
C.
《飞猪规则》
D.
《天猫规则》
【单选题】听力原文：M: I have such a bad ear infection that I won't be able to come to the final exam this afternoon. W: Only your instructor can tell you what to do in this situation. Q: What does the woman mean? (...
A.
The man shouldn't attend the exam.
B.
The man should ask his instructor's opinion.
C.
Only a doctor can tell him what to do.
D.
The instructor won't watch the students in the exam.
相关题目：
【单选题】直线l过原点(0,0),且不过第三象限,则l的倾斜角α的取值范围是( )
A.
O度≤α≤90度