利用(),数字数据可以用模拟信号来表示A、调制解调器 B、编码解码器 C、串联放大器 D、

题型:单项选择题

问题:

利用(),数字数据可以用模拟信号来表示

A、调制解调器

B、编码解码器

C、串联放大器

D、电话网络

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题型:单项选择题

某新建办公楼工程,主楼建筑面积29600m2的,地上16层,地下1层,基础埋深4m,现浇混凝土框架剪力墙结构。附楼建筑面积5000m2混合结构,地上3层。地下防水采用防水混凝土附卷材防水,屋面采用卷材防水,室内采用涂料防水。土方开挖采用放坡形式。预制桩地基,筏板基础。某施工总承包单位中标后成立了项目部组织施工。施工过程中发生如下事件:

事件一:土方开挖过程中,边坡局部塌方,使地基土受到扰动,承载力降低,严重了影响建筑物的安全。监理单位认为原因是基坑开挖坡度不够,要求清除塌方后作临时性支护措施。

事件二:预制桩施工中桩身断裂。桩在沉人过程中,桩身突然倾斜错位,粧尖处土质条件没有特殊变化,而贯人度逐渐增加或突然增大;同时,当粧锤跳起后,桩身随之出现回弹现象。项目部分析原因是桩人土后,遇到大块坚硬的障碍物,把桩尖挤向一侧。采取的措施是在稳桩过程中及时纠正垂直,接桩时要保证上下桩在同一纵轴线上,接头处要严格按照操作规程施工。监理工程师认为分析不够,措施不全。

事件三主楼地上一层楼板钢筋验收时,发现柱、板主筋错位,个别保护层不够的现象。

项目部分析原因是钢筋未按照设计或翻样尺寸进行加工和安装。防治措施是现场钢筋加工应严格按照设计和现场翻样的尺寸进行加工和安装。监理工程师认为分析不够,措施不全。

事件四:一层电梯侧墙模板拆除后混凝土表面出现麻面、露筋、蜂窝、孔洞现象。

项目部分析原因是表面不光滑、安装质量差,接缝不严、漏桨,模板表面污染未清除;木模板在混凝土人模之前没有充分湿润,钢模板脱模剂涂刷不均匀;钢筋保护层垫块厚度或放置间距、位置等不当。防治措施是模板使用前应进行表面清理,保持表面清洁光滑,钢模应保证边框平直,组合后应使接缝严密,必要时可用胶带加强,浇混凝土前应充分湿润或均匀涂刷脱模剂。监理工程师认为分析不够,措施不全。

事件五:二层顶板发现混凝土收缩裂缝。项目部分析原因是混凝土原材料质量不合格,如骨料含泥量大等;水泥或掺合料用量超出规范规定。防治措施是选用合格的原材料。监理工程师认为分析不够,措施不全。

【问题】

1.事件一中,事故原因、防治措施还应有哪些?

2.事件二中,事故原因、防治措施还应有哪些?

3.事件三中,事故原因、防治措施还应有哪些?

4.事件四中,事故原因、防治措施还应有哪些?

5.事件五中,事故原因、防治措施还应有哪些?

题型:单项选择题
When I walked into the house after school, the first thing I noticed was a box with items I recognized from my dad’s office.
“What are you doing at home?” I asked casually.
“Andrew, I was    31    today,” he answered quietly.
I was sure he was joking. “No, you weren’t. Why are you    32    at home?”
Then I noticed his    33    and realized he was telling me the truth. My father has always been a hard worker and prided himself on his career.    34    our family has been his joy, and I guess I have    35    his work for granted.
My father’s unemployment    36   many changes in our lives. For starters, he was at home all the time, which meant my bed had to be    37  , my room cleaned up, and my     38    done right after school. I would come home every day to find him at the computer     39    jobs. I began to notice how    40    he seemed, and how losing his job affected his self-esteem, though he tried to be    41   . For the first time, I    42   my dad as vulnerable (易受伤的). He asked my brother and me to    43    less. I gave up my pocket money,    44    it wasn’t much. I felt I was doing the right. I also found a part-time job.
After several difficult months of searching, my dad    45    to go in a totally different direction. He    46    that he never wanted to be laid off again, so he was going to start his own business. Day by day, I watched him    47    it, and I admired how much time and     48    he expended. I    49   knew he was a hard worker, but watching him in action really affected me.
Although this was one of the    50    experiences for our family, it taught me a lot about dealing with adversity (逆境), and will be my foundations for success.
小题1:
A.taken off
B.put off
C.laid off
D.called off
小题2:
A.eventually
B.really
C.frequently
D.especially
小题3:
A.happiness
B.kindness
C.loneliness
D.seriousness
小题4:
A.Supporting
B.Abusing
C.Offering
D.Shooting
小题5:
A.regarded
B.taken
C.viewed
D.looked
小题6:
A.came out
B.brought about
C.gave off
D.let out
小题7:
A.made
B.sold
C.banned
D.applied
小题8:
A.job
B.homework
C.fun
D.time
小题9:
A.falling into
B.putting up
C.keeping on
D.searching for
小题10:
A.down
B.flexible
C.concrete
D.honest
小题11:
A.disappointed
B.optimistic
C.anxious
D.appropriate
小题12:
A.considered
B.remembered
C.rejected
D.predicted
小题13:
A.earn
B.enjoy
C.spend
D.find
小题14:
A.even so
B.if only
C.even though
D.as if
小题15:
A.hoped
B.decided
C.dreamed
D.expected
小题16:
A.advised
B.informed
C.explained
D.insisted
小题17:
A.form
B.open
C.set
D.build
小题18:
A.strength
B.power
C.force
D.energy
小题19:
A.never
B.seldom
C.always
D.hardly
小题20:
A.worst
B.best
C.most
D.least
题型:单项选择题

以下哪项不是公安专业工作( )

A.审核消防工程设施

B.犯罪嫌疑人的关押看守工作

C.民用危险物品管理

D.突发事件的救助与处置

题型:单项选择题

标志寄存器中,AF表示()标志,ZF表示()标志。

题型:单项选择题

关于桥梁工程中防水层表面的说法,错误的是()。

A.应平顺均匀,不得有明显的凹凸不平存在

B.不允许有皱褶、破损、鼓泡、翘边等缺陷

C.防水层与污工粘结情况,可在现场试验,确认合格与否

D.各层间不得粘结

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