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【单选题】
97 按部件功能发动机启动系统由直流电动机、传动机构和( )三部分组成。A.
正时机构
B.
制动机构
C.
控制机构
D.
启动机构
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举一反三
【单选题】certain that his invention will lead to the development of production.
A.
That's
B.
This is
C.
It's
D.
What's
【单选题】________shows a factory’s production capacity.
A.
An assembly line or a production line
B.
A workshop
C.
A worker
D.
Production manager
【简答题】207风管制作安装工程量计算以施工图规格不同按展开面积(周长*长度)计算,不扣除检查孔、测定孔、送风口、吸风口等所占面积。圆管展开面积=?
【单选题】________________certain that his invention will lead to the development of production.A．That's
A.
37.________________certain that his invention will lead to the development of production. A．That's
B.
This is
C.
It's
D.
What's
【单选题】Which of the following is NOT true of a nation’s production-possibility curve?
A.
The production-possibility curve shows all combinations of amounts of different products that an economy can produce when its resources are fully employed.
B.
Points inside the production-possibility curve are feasible, but may represent unemployment of some of the economy’s resources.
C.
Points outside the production-possibility curve are not feasible production points given the resources in the economy.
D.
The negative slope of the production-possibility curve indicates declining productivity.
【单选题】The country's production dropped while prices and unemployed ______.
A.
skyrocketed
B.
outer-spaced
C.
overestimated
D.
under-questioned
【简答题】207风管制作安装工程量计算以施工图规格不同按展开面积(周长*长度)计算,不扣除检查孔、测定孔、送风口、吸风口等所占面积。矩形管展开面积=?
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