单项选择题

Which of the following contributes to the low-cost of using rainwater

A．Rainwater is free of chemical treatments.
B．People have been harvesting rainwater for centuries.
C．The water harvesting system is built on a platform.
D．Rainwater can be collected using pipes.

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热门试题

单项选择题Which of the following statements is NOT true about professor Sax's research

A．The research indicates that most students with only one Jewish parent will not think themselves as Jewish.
B．The survey was carried out among Jewish Freshmen.
C．The research survey didn't find out what and how these Jewish students think about their religion.
D．The research presents a new perspective for the future study.

单项选择题What does Olson think about mass production

A．It's capital intensive.
B．It's property intensive.
C．It relies on individual labor.
D．It relies on individual skills.