【单选题】Which of the following statements is NOTtrue, according to the article?
A.
Natural gas comes partly from Canadian fields.
B.
Bottled gas is more expensive than utilitygas.
C.
Equipment for home heating has been considerablyimproved.
D.
Solar heating dominated America in 2000.
【单选题】关于胆色素的叙述,正确的是()
D.
胆素原是肝胆红素在肠道细菌作用下与乙酰CoA形成的
E.
胆红素与胆色素实际是同一物质,只是环境不同,而有不同命名
【判断题】西文字符在计算机中通常采用ASCII码表示,每个字节存放1个字符。
【简答题】西文字符在计算机中通常采用ASCII码表示,每个字节存放 个字符。
【单选题】关于胆色素的叙述,正确的是( )
A.
胆红素与胆色素实际是同一物质,只是环境不同,而有不同命名
C.
胆素原是肝胆红素在肠道细菌作用下与乙酰CoA形成的
【单选题】With the plentiful and variety of biology species, Mount Huangshan has become a World Natural and Cultural Heritage site.
【判断题】西文字符在计算机中通常采用ASCII码表示,每个字节存放1个字符
【单选题】Man and Nature The balance of nature is a delicate system of checks and counterchecks. Nature has its own way of checking the life and distribution of the different organisms and helping their growth....
【单选题】下列关于胆色素的叙述中不正确的是
A.
它是铁卟啉化合物在体内主要分解代谢产物的总称