都江堰位于天府四川的中部，它引岷江水灌溉千里沃野，免除了水灾，发挥了巨大的水利作用，直到近代，都江堰主体工程依然屹立在岷江上，支流和渠道总长二千三百多华里，受益十多个县，请问是谁领导了都江堰工程的修建（）
If the skin is tight, it vibrates more quickly when you bang the drum and produces a higher-pitched sound; if the skin is loose, the opposite happens and you get a much lower note. A similar thing happens in a loudspeaker. Bigger speakers with large cones (known as woofers) move more...
However, Harvard’s battery is a paper-thin version of a coin cell—like a watch or hearing aid battery. And these proportions are likely not the same ones for most commercial applications down the road, where batteries will be much larger and thicker, and have different ratios of materials...
“我认为，美国的政策必须支持那些人民，他们正在抵抗武装起来的少数人，或是外来压力企图加于他们的！我认为，我们必须援助自由人民，以自己的方式来规划自己的命运！我认为，我们提供的帮助首先应该是经济和财政接助，这是达到经济稳定和有秩序的政治进程所必须的！”文中所宣布的美国的战略思想是指（）。
"Basically, having a regular $25K model is pointless,” Musk said. “It would be silly. It would be completely at odds with what we believe." Tesla, Musk continued, has “been very clear that the future is autonomous.” On October 10, Tesla unveiled its much-awaited robotaxi, called ...
Within six months, Jefferson Airplane had gone from being the house band in a former pizza joint to being the supergroup of San Francisco. By April, Helms had moved the Family Dog from the Fillmore to the Avalon Ballroom—sharing the Fillmore with a competitor had proved too much for Graham...
Much of the spark and enthusiasm at Riverview Gardens comes from its staff, led by executive director Cindy Sahotsky. She is often right in the middle of the action, no matter the job. When program participants visited Sacred Heart Parish to help remove large stones where a ...
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Both physically and emotionally, be in the room. It can be difficult to avoid becoming hyperaware of the significance of the moment: "Is that the last time he'll say, 'I love you'?" Every moment can feel tense and electric. But get out of your own way and try, as much as possibl...