患者女，45岁，右下腹痛，恶心、呕吐一天，诊断慢性阑尾炎急性发作入院。既往有风湿性心

根据尼奎斯特定理，若信道带宽为6KHz，那么，理想信道的波特率为 (193) ；若采用QPSK调制，其数据速率应为 (194) ；如果该信道信噪比为30dB，则该信道的带宽约为 (195) 。设信道误码率为10^-5，帧长为10K比特，差错为单个错，则帧出错的概率为 (196) 。若整个报文被分成5个帧，帧出错的概率为0.1，纠错重发以报文为单位，则整个报文的平均发送次数约为 (197) 次。

（195）处填（）

A.10Kb/s

B.20Kb/s

C.30Kb/s

D.60Kb/s

根据材料内容，从下面五个选项中选出能填入文中空缺处的最佳选项，使短文意思通顺，内容完整，并将其标号填涂在答题卡的相应位置。

Science and technology are developing quickly. On the one hand they can improve our lives, but on the other hand, they can cause pollution. 小题1:

Air pollution is a serious problem. Factories and heavy traffic give out a lot of smoke and make the air dirty.        小题2:So the government should take action and make everyone keep the air clean.

The main reasons for noise pollution are heavy traffic and road works. 小题3:Therefore, the government should try to make less noise.

Factories put a lot of dirty water and chemicals into the rivers and the sea. They pollute the water. 小题4:      And it also can make sea animals sick. So the government should stop factories doing that.

The main reasons for land pollutions are construction and people. Construction makes much waste and people throw away a lot of rubbish every day. 小题5: People should stop throwing away so much rubbish and start using old things again.

下列滴定方法不属于滴定分析类型的是（）。

A、酸碱滴定法；

B、浓差滴定法；

C、配位滴定法；

D、氧化还原滴定法。

1935年胡子昂有感于国家贫穷落后，内忧外患，决心以“实业救国”，遂与友人共同经营重庆（）公司。

银行业犯罪中的金融凭证诈骗罪，是指以非法占有为目的，采用虚构事实、隐瞒真相的方法，使用伪造、变造的（）等银行结算凭证进行诈骗活动的行为。

A.委托收款凭证

B.货币

C.汇款凭证

D.银行存单

E.国库券