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【简答题】
根据下列短文的意思及首字母提示，完成单词。 I have many friends, and they have d 1 favorite subjects. John's favorite subject is computer because he thinks computer can h 2 him a lot in his study. He is a computer f 3 . He likes playing computer g 4 very much, and he is good at playing it. Jack likes art best because he likes d 5 pictures a lot. Mary likes Chinese because her father is Chinese. Her father t 6 her Chinese at home. She loves China very much, and she wants to know more a 7 China. Bob thinks math is very i 8 so he likes math best. David likes P. E. because he likes doing s 9 He is good at p 10 basketball and soccer. 1.______ 2.______ 3.______ 4.______ 5.______ 6.______ 7.______ 8.______ 9.______ 10.______
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【单选题】欲配制 pH=5.1 的缓冲溶液,在下列缓冲体系中最合适的是
A.
一氯乙酸（ p K y a =2.86 ）
B.
氨水（ p K y b =4.74 ）
C.
六次甲基四胺（ p K y b =8.85 ）
D.
甲酸（ p K y a =3.74 ）
【简答题】欲配制pH=5.1的缓冲溶液，在下列缓冲系统中最合适的是( ) A．一氯乙酸() B．氨水() C．六亚甲基四胺() D．甲欲配制pH=5.1的缓冲溶液，在下列缓冲系统中最合适的是( )
【单选题】手厥阴心包经的循行是( )
A.
“去腕两寸，出于两筋之间”
B.
“上出两指之间、循手表腕”
C.
“从肺出，络心，注胸中”
D.
“循胸出胁，下腋三寸”
E.
“出渊腋下三寸，布胸中”
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