如图为下丘脑某细胞的部分膜结构示意图,下列叙述正确的是( )
A:动作电位的形成与膜上的②、④等有关,A面为正电位,B面为负电位
B:若此细胞可以分泌促进水重吸收的激素,那么该激素作用的靶器官是垂体
C:该细胞可参与形成体温调节中枢、呼吸中枢等重要的生命活动中枢
D:若此图为突触后膜局部结构,则兴奋经过此处时的信号转换是:化学信号→电信号
连续暴雨在山区容易引发的自然灾害是( )
根据如图所示实验分析得出的结论中,不正确的是( )
A.甲烷燃烧生成二氧化碳和水
B.铁能在氧气中燃烧
C.白磷的着火点比红磷的低
D.氧气约占空气质量的15
Tony Wheeler was born to travel. His father worked for an airline. For the first 16 years of his life,Wheeler and his family lived in many different countries. In the early 1970s,Wheeler met a young woman named Maureen. They soon married. Before getting jobs, Tony and Maureen wanted to travel. They took a year-long trip from London,through Asia,to Australia. On the trip,they visited places like India, Iran, and Afghanistan. When Tony and Maureen arrived in Australia,people asked many questions about their trip. To answer these questions,Wheeler wrote a guidebook called Across Asia on the Cheap . The book told people about different countries' weather,customs(风俗),and places to see. But unlike travel guides in the 1970s,Wheeler’s book also talked about places most tourists did not go. He also wrote about unusual things to see and do. The book was very popular. Wheeler and Maureen started a company called Lonely Planet. They continued travelling. They wrote guidebooks for each place they visited. Today,400 people work for Lonely Planet. The company has over 650 guidebooks. Wheeler still writes about travel “hot spots” (for example,Cambodia in Asia and Croatia in Europe). For more information,read the books!
已知三角形的两边长分别为3cm和8cm,则该三角形的第三边的长可能是( )