单项选择题 It can be inferred from the passage that low-pressure sprinklers would be more preferable to high-pressure models for which of the following reasons（）

单项选择题 Most nearly parallel, in its fundamental approach to the drip system solution described in the passage would be a machine designed to（）

单项选择题 According to the passage, the main disadvantage with reconfiguring diet to lessen water usage is（）