7、由于变压器体积大、重量重、价格昂贵，所以把它们从电路中去掉能节省不少费用。 Since transformers are large, heavy, and expensive, results in considerable savings.A．the circuit eliminates themB．their eliminating from the circuitC．their elimination from the circuitD．the eliminating of them from the circuit
7、由于变压器体积大、重量重、价格昂贵，所以把它们从电路中去掉能节省不少费用。 Since transformers are large, heavy, and expensive, results in considerable savings.
A．the circuit eliminates them
B．their eliminating from the circuit
C．their elimination from the circuit
D．the eliminating of them from the circuit
参考答案和解析
油;纸;棉纱;木
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