题目内容

Reporters circled it, their microphones and cameras trained on the machine as it tried to start up,

A. targeted
B. instructed
C. pulled
D. pictured

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Liquid flows through the pipes into the home, where a heat exchanger either adds or subtracts heat from indoor air, depending on the season.

A. communicator
B. instrument
C. bank
D. conditioner

One of the newest trends in wind power is the construction of offshore windfarms, clusters of electricity-generating turbines erected in open-water areas with strong winds.

A. bearing
B. producing
C. inventing
D. forming

Jeff Mazer notes that most thin-film photovoltaic systems today have a 7 to 11 percent efficiency rating.

A. popularity
B. capability
C. evaluation
D. classification

蛋白免疫印迹实验又称为()。

A. NorthernBlot
B. SouthernBlot
C. WesternBlot
D. EasternBlot

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