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【简答题】
变压器的主要功能是改变 ,同时还有改变电流、变换阻抗等作用。
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参考答案：
举一反三
【单选题】听力原文：The global steel industry is in a mess. Overcapacity and weak demand have hurt producers. In 2002, 847 million tons of steel was produced, but consumption was only 765 million tons. Steel makers ...
A.
The steel industry still has a bright prospect on a global scene.
B.
Steel consumption in the world registered a drastic cut.
C.
Steel makers are drastically cutting down their production.
D.
Better promotion is needed for improving sales of steel products.
查看完整题目与答案
【单选题】下列关于法律部门的表述，能够成立的是（ ）
A.
教师法属于社会法部门
B.
国务院组织法属于行政法部门
C.
程序法部门不涉及非诉讼关系
D.
我国法律体系还未形成法律部门
查看完整题目与答案
【单选题】America's economic recovery remains uncomfortably weak. The latest data show industrial production falling while the trade deficit soars to record levels. To round off a dismal week for economic stati...
A.
It is recovering.
B.
It faces an uncertain future.
C.
It remains depressing.
D.
It shows unreliable signs.
查看完整题目与答案
【单选题】烤箱按外形可分为通道式烤箱和（）。
A.
煤气烤箱
B.
柜式烤箱
C.
转动式烤箱
D.
固定式烤箱
查看完整题目与答案
【单选题】154既可用于瞄准,也可用于测微的是()式侧头
A.
电器接触
B.
非接触
C.
机械接触
D.
液压接触
查看完整题目与答案
【判断题】If a consumer maximizes a utility function subject to a budget constraint and has strictly convex preferences, then his behavior will necessarily satisfy the weak axiom of revealed preference and the ...
A.
正确
B.
错误
查看完整题目与答案
【单选题】At prices (4; 12); Harry chooses the bundle (9; 4). At the prices (8; 4); Harry chooses the bundle (2; 9). Is this behavior consistent with the weak axiom of revealed preference?
A.
Yes
B.
No
C.
t depends on his income
D.
We would have to observe a third choice to be able to say.
查看完整题目与答案
【单选题】下列关于法律关系的表述，不能成立的是（ ）
A.
法律关系属于社会关系
B.
法律关系是社会关系产生的前提
C.
没有法律规定就没有法律关系
D.
有些社会关系可以上升为法律关系
查看完整题目与答案
【单选题】烤箱按外形可分为柜式烤箱和（）。
A.
煤气烤箱
B.
转动式烤箱
C.
固定式烤箱
D.
通道式烤箱
查看完整题目与答案
【单选题】听力原文：The global steel industry is in a mess. Overcapacity and weak demand have hurt producers. In 2002, 847 million tons of steel was produced, but consumption was only 765 million tons. Steel makers ...
A.
The steel industry still has a bright prospect on a global scene.
B.
Steel consumption in the word registered a drastic cut.
C.
Steel makers are drastically cutting down their production.
D.
Better promotion is needed for improving sales of steel products.
查看完整题目与答案
相关题目：
【单选题】听力原文：The global steel industry is in a mess. Overcapacity and weak demand have hurt producers. In 2002, 847 million tons of steel was produced, but consumption was only 765 million tons. Steel makers ...
A.
The steel industry still has a bright prospect on a global scene.
B.
Steel consumption in the world registered a drastic cut.
C.
Steel makers are drastically cutting down their production.
D.
Better promotion is needed for improving sales of steel products.
查看完整题目与答案
【单选题】下列关于法律部门的表述，能够成立的是（ ）
A.
教师法属于社会法部门
B.
国务院组织法属于行政法部门
C.
程序法部门不涉及非诉讼关系
D.
我国法律体系还未形成法律部门
查看完整题目与答案
【单选题】America's economic recovery remains uncomfortably weak. The latest data show industrial production falling while the trade deficit soars to record levels. To round off a dismal week for economic stati...
A.
It is recovering.
B.
It faces an uncertain future.
C.
It remains depressing.
D.
It shows unreliable signs.
查看完整题目与答案
【单选题】烤箱按外形可分为通道式烤箱和（）。
A.
煤气烤箱
B.
柜式烤箱
C.
转动式烤箱
D.
固定式烤箱
查看完整题目与答案
【单选题】154既可用于瞄准,也可用于测微的是()式侧头
A.
电器接触
B.
非接触
C.
机械接触
D.
液压接触
查看完整题目与答案
【判断题】If a consumer maximizes a utility function subject to a budget constraint and has strictly convex preferences, then his behavior will necessarily satisfy the weak axiom of revealed preference and the ...
A.
正确
B.
错误
查看完整题目与答案
【单选题】At prices (4; 12); Harry chooses the bundle (9; 4). At the prices (8; 4); Harry chooses the bundle (2; 9). Is this behavior consistent with the weak axiom of revealed preference?
A.
Yes
B.
No
C.
t depends on his income
D.
We would have to observe a third choice to be able to say.
查看完整题目与答案
【单选题】下列关于法律关系的表述，不能成立的是（ ）
A.
法律关系属于社会关系
B.
法律关系是社会关系产生的前提
C.
没有法律规定就没有法律关系
D.
有些社会关系可以上升为法律关系
查看完整题目与答案
【单选题】烤箱按外形可分为柜式烤箱和（）。
A.
煤气烤箱
B.
转动式烤箱
C.
固定式烤箱
D.
通道式烤箱
查看完整题目与答案
【单选题】听力原文：The global steel industry is in a mess. Overcapacity and weak demand have hurt producers. In 2002, 847 million tons of steel was produced, but consumption was only 765 million tons. Steel makers ...
A.
The steel industry still has a bright prospect on a global scene.
B.
Steel consumption in the word registered a drastic cut.
C.
Steel makers are drastically cutting down their production.
D.
Better promotion is needed for improving sales of steel products.
查看完整题目与答案
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