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【单选题】
已知硅稳压管 2C ω4、2Cω5的稳压压值分别为11V与此同时2V,如 图 4-10 稳压电路的稳压值为( )伏。
A.
23
B.
0.7
C.
1.4
D.
0
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参考答案:
举一反三
【单选题】易发生自动氧化的药物,可采用下列哪种方法增加稳定性
A.
增加氧的浓度
B.
加入氧化剂
C.
长时期露置在空气中
D.
加入抗氧剂
E.
提高温度
【单选题】Tom and I went to the cinema but we weren' t able to get tickets for______.
A.
two of us
B.
the two of us
C.
the second of us
D.
second of us
【单选题】下列关于 Hibernate 说法正确的是 _________________
A.
Hibernate是对JDBC轻量级的封装
B.
Hibernate在客户端运行
C.
Hibernate是EJB的扩展
D.
Hibernate的配置文件名只能是hibernate.cfg.xml
【单选题】易发生自动氧化的药物,可采用下列哪种方法增加稳定性
A.
增加氧的浓度
B.
加入氧化剂
C.
长时间露置在空气中
D.
加入抗氧剂
E.
加热
【单选题】Some people were queuing outside the Scala Theatre for tickets for a very popular show. They had to wait for several hours, and during that time they were entertained by a young man who was playing ve...
A.
were difficult to buy
B.
were easy to get
C.
were sold out in a short while
D.
were not to be sold out
【单选题】Why must Henry book tickets when he is still in the office?
A.
The telephone box is busy
B.
There are only two tickets left.
C.
He wants to do it as early as possible.
【单选题】易发生自动氧化的药物,可采用下列哪种方法增加稳定性
A.
增加氧的浓度
B.
加入氧化剂
C.
长时期露置在空气中
D.
紫外光照射
E.
加入抗氧剂
【简答题】Tickets Information Dates: 30th July — 8th August The Princess              Mon — Fri, 10 a.m., 7 p.m. And The Frog             Sat — Sun, 10 a.m., 2 p.m., 7 p.m. Venue: Star Theatre          ...
【单选题】大叶性肺炎不会出现的并发症是
A.
肺褐色硬化
B.
脓胸
C.
败血症
D.
肺脓肿
E.
肺肉质变
【单选题】实际上根据大气温度、密度和物质组成等特点,可以把地球大气层分为( )层。
A.
3
B.
4
C.
5
D.
6
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