常用监测大型低速船舶柴油机转速的非数字式转速传感器是()。A.离心式 B.测速发电机

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问题:

常用监测大型低速船舶柴油机转速的非数字式转速传感器是()。

A.离心式

B.测速发电机式

C.磁电脉冲式

D.光电式

考点:海船船员考试船舶报警系统船舶报警系统题库
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某房地产企业正在开发一个景观小区,并进行了大量的宣传,预计2012年3月可以完工。以上叙述中涉及到的活动有()

A.企业的基础设施建设

B.生产经营

C.市场营销

D.技术开发

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根据短文内容和首字母提示,补全文中单词.。

     All a __1__ the world, people drink tea. But tea doesn't mean the same thing to everyone. In different

 countries people have very d__2__ ideas about drinking tea.

     In China, for example, tea is always served w__3__ people get together. The Chinese drink it at any

  time of the day at h __4__ or in tea houses. They prefer their tea plain, with nothing e__5__ in it.

     Tea is a __6__ important in Japan. The Japanese have a special way of serving tea c __7__  a  tea

 ceremony (茶道). It is very old and full of meanings. Everything must be done in a special way in the

 ceremony. There is even a special room for it in J__8__ homes.

     A __9__ tea-drinking country is England. In England, the late afternoon is "teatime".  Almost everyone

  has a cup of tea then. The English usually make tea in a teapot and drink it w __10__ cream and sugar. They also eat cakes, cookies and little sandwiches at teatime.

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_______ is an important city in Canada.[ ]

A. Tokyo    

B. London      

C. Toronto  

D. Sydney

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为了验证碳酸氢钠固体中是否含有碳酸钠。下列实验及判断中正确的是 

A.加热,观察是否有气体放出

B.溶于水后加石灰水,看有无沉淀

C.溶于水后加氯化钡溶液,看有无沉淀

D.加热后称量,看质量是否变化

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论述全球性结构的各种形式的优缺点及其适用范围。

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