可用来制造航空发动机叶片和飞机或航天器蒙皮的大型壁板的复合材料是( )。A.碳纤维

题型:单项选择题

问题:

可用来制造航空发动机叶片和飞机或航天器蒙皮的大型壁板的复合材料是( )。

A.碳纤维增强酚醛树脂

B.石墨纤维增强铝基

C.硼纤维增强铝合金

D.钼纤维增强钛合金

考点:造价工程师建设工程技术与计量(安装)建设工程技术与计量(安装工程部分)35
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阻碍组织再生的最常见原因是()

A.营养摄入障碍或免疫力低下

B.局部关节活动过多

C.局部出现静脉性充血

D.异物存留或失活组织过多

E.感染

题型:单项选择题

完形填空

     Louise was 72 years old and she lived by herself. The first thing she noticed when she came

downstairs that Sunday morning was that her    1   window was open. In fact, it was so wide open that

she had    2   closing it. Then she realized that things were not in their proper    3   . Finally, when she

found her empty    4  on the kitchen table, she realized the awful    5   . At first, she didn't know what to

do. Then she decided to   6   her son, Derek.

     Derek's wife Sybil answered the phone, "It's your mother," she    7   him, coldly. Louise told Derek

about the open window, about things being in the wrong places and about the    8   missing from her

purse.

     "All right," said Derek, "Don't    9   anything. I'll be    10   in half an hour."

     Louise    11   and made herself a pot of tea and some toast. Then she went from room to room

wondering    12  anything else was missing.

     When Derek arrived, he was content to   13   her looking so calm. "Have you rung the     14  ?" he

asked. "No? Then I'll do that straight away." So he rang the police.

     As it was Sunday,   15  the only detectives were out. However, the police were polite, but vague

(含糊的). "We'll send    16   round as soon as possible," they said.

     Derek telephoned his wife. "I'm not sure when I'll be home, love," he told her. "I've got to    17  for

the police." While Derek and his mother waited, Derek    18  the catches(挂钩)on the windows and

locks on the doors. All of them were old and some of the catches hardly    19   at all. Derek felt    20   .

His mother was an old woman, after all. "I'll have to change all these," he told her.

题型:单项选择题

脚踏泵用于()压力失效的情况下启用受电弓。它位于B车2位中间端。

A、制动管 

B、空气簧风缸 

C、闸缸 

D、总风管

题型:单项选择题

财政补贴支出包括的内容有()。

A、物价补贴

B、企业亏损补贴

C、专项补贴

D、财政贴息

E、社会福利与救济

题型:单项选择题

中国邮政储蓄银行电话银行注册客户通过电话银行办理转账业务前,设置转入方账户个数最多为()个。

A、1

B、2

C、3

D、5

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