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听力原文:M: Did you take these pictures? They're very good. W: Yes, I think they turned out well too. I like to take my camera with me wherever I go. That way, if I see something interesting, I can snap a picture of it. M: Carrying a big camera around is too much trouble for me. W: My camera is really small, though. Here let me show you. M: That is a compact camera, but you really must know a lot about photography to get such professional looking results. W: Not necessarily. This camera is simple to operate. M: Does this model come with flash attachment for indoor shots? W: Better than that! It has a built-in electronic flash and an automatic focus too. I don't even have to worry about focusing. M: That's what I need. When I take pictures they usually come out blurry because I don't adjust the lenses properly and I hate photos that are out of focus. Is a camera like yours very expensive? W: Less than you'd expect. Why don't you check the prices at Hatfield's down the street? This model was on sale there last week. M: I think I will, it certainly won't hurt to take a look. As the conversation begins, what are the man and the woman doing?
A.
Looking at some photographs.
B.
Selling cameras.
C.
Teaching a photography class.
D.
Repairing camera equipment.
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【简答题】从单片机的角度上看,连接到数据总线上的输出口应具有()功能,连接到数据总线上的输入口应具有()功能。
【单选题】输电线路工程预算定额中,工地运输的平均运距以千米为单位。用拖拉机、人力运输时,平均运距保留( )。
A.
三位小数
B.
两位小数
C.
一位小数
D.
整数
【简答题】某局BSC原有2个BM模块,由于业务发展需要,扩容1个BM模块,根据容量计算结果,A接口没有必要扩容,在工程中就没做任何改动。BSC扩容割接后,在一段时间内网络运行良好,各项指标均达标,但是随着市区新建基站逐渐割入该新增模块,经常有用户不在服务区问题的投诉,在最严重时大面积出现用户不在服务区现象,并伴随出现大量“GMC2链路通信过载”告警。根据这些信息请回答以下几个问题。为了避免这种现象,在扩容A...
【简答题】某局BSC原有2个BM模块,由于业务发展需要,扩容1个BM模块,根据容量计算结果,A接口没有必要扩容,在工程中就没做任何改动。BSC扩容割接后,在一段时间内网络运行良好,各项指标均达标,但是随着市区新建基站逐渐割入该新增模块,经常有用户不在服务区问题的投诉,在最严重时大面积出现用户不在服务区现象,并伴随出现大量“GMC2链路通信过载”告警。根据这些信息请回答以下几个问题。请画出BSS的信令处理流程...
【简答题】某局BSC原有2个BM模块,由于业务发展需要,扩容1个BM模块,根据容量计算结果,A接口没有必要扩容,在工程中就没做任何改动。BSC扩容割接后,在一段时间内网络运行良好,各项指标均达标,但是随着市区新建基站逐渐割入该新增模块,经常有用户不在服务区问题的投诉,在最严重时大面积出现用户不在服务区现象,并伴随出现大量“GMC2链路通信过载”告警。根据这些信息请回答以下几个问题。该局出现大量用户不在服务区...
【简答题】8位二进制,所能表示的无符号十进制数的范围是(),如果表示有符号数,则所能表示的十进制数的范围是()
【单选题】8位二进制有符号数补码能够表示的十进制数范围是 ( )
A.
0~+127
B.
-128~+127
C.
-127~+127
D.
-127~+128
【单选题】Ubuntu中默认的SHELL是什么?
A.
ksh
B.
tcsh
C.
bash
D.
shsh
【单选题】药物的鉴别试验是证明:
A.
未知药物真伪
B.
已知药物真伪
C.
已知药物疗效
D.
未知药物纯度
E.
以上都不对
【单选题】8位二进制有符号数补码能够表示的十进制数范围是()
A.
0~+127
B.
-128~+127
C.
-127~+127
D.
-127~+12
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