The H-2A visa has no numerical cap, unlike the H-2B visa for nonagricultural work, which is limited to 66,000 a year.
与非农业工作的 H-2B 签证(每年上限为是6.6万个)不同,H-2A 签证没有数量限制。
This feature will be added to H-P's personal desktop laser printers in 2009, says Pat Tiernan, H-P's vice president of social and environmental responsibility.
惠普到2009年将在个人台式激光打印机上增加这个功能。
So it looks a lot less messy if we just draw our Lewis structure like this for h c n, where we have h bonded to c triple bonded to n, and then a lone pair on the nitrogen there.
这看起来整洁了不少,如果我们把氰化氢的路易斯结构画成这样的话,这样我们就有氢与碳之间的单键和碳与氮之间三键,然后还有一对孤对电子在氮这里。
He says Poe's influence can also be seen in the work of H.G.Wells and Alfred Hitchcock,to name a few.
VOA: special.2009.02.02
And one thing I want to tell you to start out with is something about this c h 3 group here.
有一点需要告诉大家的是,从这个一个碳原子和三个氢原子的组合开始。
It turns out after you do all the math, H it turns out to be delta H equals zero.
要等你做完所有的计算之后,才能知道结果,结果证明Δ
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