题目内容

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

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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

蛋白样品制备时加入SDS的作用是（）。

A. 变性蛋白质
B. 破坏肽键
C. 促进蛋白质复性
D. 以上都是