有用矿物是能被人类所利用的矿物叫()。
参考答案:矿石
—The dinner was delicious!
—I agree. I’m so full.
—That’s too bad. But some dessert ______.
A.has ordered
B.will be ordered
C.has been ordered
D.was going to be ordered
Km值是指反应速度为1/2Vmax时的
A.酶浓度B.底物浓度C.抑制剂浓度D.激活剂浓度E.产物浓度