According to the theory of capital maintenance, the profit is earned if the value of the entity’s net assets or operating capacity has increased during the accounting period.
【单选题】The need for solar electricity is clear. It is safe, ecologically sound, efficient, continuously available, and is has no moving parts. The basic problem with the use of solar photovoltaic devices is ...
A.
discussing the importance of solar energy
B.
explaining the functioning of solar cells
C.
presenting a history of research on energy sources
D.
describing a possible solution to the problem of the cost of photovoltaic cells
【简答题】1 New technology often creates unanticipated problems. 2 A utomobiles, for example, provide numerous benefits, but they also pollute the air and kill about fifty thousand Americans each year. 3 It is ...