精氨酸双水解酶试验参与的酶为（） A.精氨酸脱氨酶 B.瓜氨酸酶 C.鸟氨酸脱羧酶 发布时间：2017-08-21 23:23 │ 来源：www.tikuol.com 题型：多项选择题 问题： 精氨酸双水解酶试验参与的酶为（）A.精氨酸脱氨酶B.瓜氨酸酶C.鸟氨酸脱羧酶D.色氨酸酶E.精氨酸脱酰胺酶
题型：多项选择题 下列各组词语中，划线字的注音全都正确的一组是（ ）A．踹（chuài）水竞（jìnɡ）赛蘸（zhàn）酒擂（léi）鼓助威B．跋涉（shè）陡（dǒu）峭攀登（dēnɡ）餐霜饮雪（xiě）C．善（shàn）良谦逊（sùn）璞（pú）玉不事雕琢（zhuó）D．荆棘（jí）飘泊（bó）青苔（tāi）红漆（qī）雕花 查看答案
题型：多项选择题 I’m Zhao Kai. I have a good friend. His name is Ben. 小题1: He comes to China because(因为) his parents work in China. 小题2: He speaks English very well, but his Chinese isn’t good. I often help him with Chinese and he helps me with English. 小题3: He has many friends in our school. Ben often plays with his friends. 小题4: His favorite food is jiaozi. I often invite(邀请) him to my home for dinner. 小题5: . Do you want to be Ben’s friend?阅读短文，从方框中选出合适的句子填入文中，使短文完整、通顺。A. We help each other.B. He comes from America.C. So he is very happy.D. He likes to eat Chinese food.E. Now Ben is in my class. 查看答案