Trinder反应中应用的工具酶是
A.LDHB.MDHC.G6PDD.PODE.GLDH
参考答案:D
1996年,泰丰公司继通过ISO9001质量体系认证后又获得了更为专业化、更为严格的()国()品质保证体系认证。
A.英BABT
B.美FCC
C.美UL
D.加拿大CSA
Last year the number of students who graduated with a driving licence reached 200,000, a(n) ______ of 40,000 per year.
A.average
B.number
C.amount
D.quantity