信息安全策略，声称“密码的显示必须以掩码的形式”的目的是防范下面哪种攻击风险？（）A

《朱子语类》云：“唐制：每事先经由中书省，中书做定将上，得旨，再下中书，中书以付门下。或有未当，则门下缴驳……若可行，门下又下尚书省，尚书但主书撰奉行而已。”对此理解有误的是[ ]

A．体现三省分权制

B．完善中央监察机制

C．减少行政决策失误

D．分散相权加强皇权

根据短文内容，判断下列句子的正误，正确的用“T”，错误的用“F”：（共5分）

Television has now come to nearly every family .It has become a very important part in people’s life . School children in the USA watch TV about twenty-five hours a week .

Some parents feel that television is good for their children because it helps them learn about their country and the world .With the help of some programs of education ,children do better in school .

Other parents do not let their children watch TV too often .They say the TV programs are not good and children may learn bad things from them

Men have invented many things which have brought much convenience(方便) . Television is one of them . If it is carefully planned , watching TV can be good for children .

小题1: Television is not important at all in people’s life .

小题2:In the USA school children watch TV about twenty hours one week .

小题3: Television can help us learn about our country and the world .

小题4: Some parents don’t let their children watch TV too often because they never learn good things from it .

小题5: Watching TV can be good for children if it is carefully planned .

慢性肺心病伴左心衰病人，在治疗中，除抗感染外，下列哪项措施最重要

A．应用血管扩张剂

B．改善通气功能

C．应用利尿剂

D．应用强心剂

E．应用祛痰剂

汽车在长100m的公路上行驶，前50m的速度为20m/s，后50m的速度为100m/s，汽车在这100m公路上的平均速度为______m/s．

设在某市区的某娱乐公司，2009年度经营情况如下：
(1) 全年歌舞厅取得收入650万元、与歌舞厅相关的烟酒饮料收入200万元，下半年开业的高尔夫球馆和保龄球馆分别取得收入230万元和160万元(当地规定歌舞厅、高尔夫球营业税税率为20%，保龄球馆营业税税率为5%)：
(2) 投资收益科目记载：购买国债取得利息收入10万元，购买国家发行的金融债券取得利息收入15万元：
(3) 全年发生经营成本250万元、经营费用120万元、管理费用200万元(其中含业务招待费用20万元)。上述成本、费用中不含工资及工资附加的“项经费”；
(4) 经有关部门批准向职工集资100万元，用于弥补经营资金不足，集资期限10个月，支付利息8万元(同期银行贷款年利率为6%)；
(5) 公司全年有职工100人，实发工资总额246万元，并实际发生职工工会经费5.92万元、职工福利费34.44万元、职工教育经费8.25万元。
要求：根据所给资料，回答下列问题(以下金额均为合计金额)：