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【单选题】
下列关于机械循环与自然循环热水供应系统的叙述中，哪项是错误的______A.
机械循环利用配水管网的给水泵的动力进行循环
B.
两者的循环动力来源不同
C.
自然循环利用热动力差进行循环
D.
自然循环系统中不设循环水泵
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反馈参考答案：
举一反三
【单选题】How does the author develop his idea in paragraph 4?
A.
By referring to a social phenomenon.
B.
By making a comparison.
C.
By posing a contrast.
D.
By criticizing a typical behavior.
【判断题】Professional can be a noun, referring to a person engaged or qualified in a job such as a doctor, a lawyer, a teacher, etc.
A.
正确
B.
错误
【简答题】What do you need to do before referring to a diagram or graph?
【单选题】When using the term limber system one is referring to a ______．
A.
Cleaning system
B.
Drainage system
C.
Strengthening system
D.
Weight reduction system
【单选题】Which of following terms is referring to a vacation hotel?
A.
Motel
B.
Suite
C.
Inn
D.
Resort
【单选题】I have never seen a house like that--its untidiness description; I think she ought to learnhow to keep a house.
A.
defies
B.
presence
C.
acquire
D.
manipulate
E.
restraints
【简答题】任务3-1的避雷带(圆钢φ10)合价是()元;其中人工费是()元,材料费是()元,机械费是()元。
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