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【判断题】
闭塞设备分为自动闭塞、半自动闭塞。( )A.
正确
B.
错误
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参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】根据五行相生规律确立的治法是（ ）
【单选题】What kind of Ground-source heat pump of this picture ?
A.
Ground coupled (Indirect expansion)
B.
Ground coupled (Horizontal)
C.
Ground coupled (Direct expansion)
D.
Ground coupled (vertical)
【简答题】A．instrument B．step C．case D．ground
【单选题】What does 'the ground lost' mean in the sentence 'It has now regained much of the ground lost' ?
A.
A temporary contraction in the forward market.
B.
The loss caused by fluctuations in exchange rates.
C.
The temporary disruption in the forward market.
D.
The loss caused by currency devaluation.
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