单项选择题

A．It is rather expensive.
B．It cannot provide enough hot water.
C．It cannot be used for heating the living room.
D．It produces a lot of work and dust.
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单项选择题
A．The customer.B．The company.C．The company and the customer.D．The company and the retailer.
A．The customer.
B．The company.
C．The company and the customer.
D．The company and the retailer.
单项选择题
A．Negative.B．Positive.C．Neutral.D．Indifferent.
A．Negative.
B．Positive.
C．Neutral.
D．Indifferent.
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