下列每组数据分别是三角形三边的长度，其中不是直角三角形的是（ ） A．5，13，1

给下列句子排序最恰当的一项是[    ]

①值得一提的是，这一活化石已成为我们湛江人餐桌上的美味佳肴

②海豆芽是一种生活在温带和热带海域的无脊椎动物

③又因为它的贝体呈长椭圆形，很像人的舌头，也有人叫它“舌形贝”

④资料显示，它是现今最古老的活化石，至今有几亿年的历史

⑤因为它上部的贝体像一颗黄豆，下部的肉茎宛若一根刚长出来的豆芽，所以俗称“海豆芽”

A．②④③⑤①

B．②⑤③④①

C．①②⑤③④

D．①②④⑤③

慢性肺心病心力衰竭时，为降低肺动脉高压，减轻右心负荷，下列治疗中宜选

A．呋塞米
B．地高辛
C．改善通气
D．静脉滴注多巴胺
E．抗生素

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by Liz Vaccariello (Author)

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Product Description

A quick and handy guide to smart eating choices from the diet that’s transforming America belly

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About the Author

Liz Vaccariello is the senior vice president and Editor-in-Chief of Prevention, the #1 healthy lifestyle brand and the 9th largest magazine in the nation, with more than 11 million readers．

Product Details

Paperback:160 pages

Publisher: Rodale Books; 1 edition (April 14,2009)  

ISBN-10: 1605296503

Shipping Weight: 4 ounces 

Amazon.com Sales Rank: #86 in Books (See Bestsellers in Books)

1．Where can you find the ad?

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何谓超敏反应?超敏反应分几型?

说明液压汽车起重机中常用的六种液压元件？平衡阀和液压锁在液压系统中主要起什么作用？