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每幢住宅的总电源进线应设剩余电流动作保护或剩余电流动作报警。()

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住宅是供家庭居住使用投资增值的建筑。()

入户管的供水压力不应大于0.35MPa。()

Why is the South Pole cold than the North Pole？ S1.
Both polar regions of the earth are cold, primarily
because they receive far less solar radiation than the
tropics and mid-latitudes do. In either pole the sun S2.
never rises more than 23.5 degrees above the horizon
and both locations experience six months of continuous
dark. Moreover, most of the sunlight that does shine S3.
on the polar regions reflected by the bright white surface. S4.
What make the South Pole so much colder than the North Pole S5.
is that it sits on top of a very thick ice sheet, which itself sits
on a continent. Surface of the ice sheet at the South Pole S6.
is more than 9000 feet in elevation—more than a mile
and a half over sea level. Antarctica is the highest continent S7.
on the earth. In comparison, the North Pole rests in the middle
of the Arctic Ocean, which the surface of floating ice rides S8.
only a foot or so above the surrounding sea. The Arctic Ocean
also acts an effective heat reservoir, warming the cold atmosphere S9.
in the winter and is drawing heat from the atmosphere in the summer. S10.
【S1】

As is suggested by William A. Banks, ______ is especially good for people with joint problems or obesity.