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【判断题】
液压传动装置工作平稳,能方便地实现无级调速,也能快速起动、制动频繁换向。A.
正确
B.
错误
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举一反三
【简答题】标态下有如下反应 Zn + Cu 2+ ←→ Zn 2+ + Cu 用原电池符号表示为
【单选题】Which of the following is included in the investment category of GDP?
A.
newly produced capital equipment
B.
inventory accumulation
C.
new residential construction
D.
All of these choices are included.
【简答题】1 标态下有如下反应 Zn + Cu2+ ←→ Zn2+ + Cu 用原电池符号表示为 ___.
【单选题】Which of the following is included in the investment component of GDP?
A.
households’ purchases of newly constructed homes
B.
net additions to firms’ inventories
C.
firms’ purchases of capital equipment
D.
All of the above are correct.
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