下列弧光辐射最强的焊接方法是()
A.手工电弧焊
B.二氧化碳保护焊
C.氩弧焊
D.等离子焊
参考答案:D
—Can you tell me Kitty's address.
—I don't know, either. But I'll tell you her address as soon as she ______ to me.[ ]
A. writes
B. write
C. wrote
D. written
合成胆固醇的限速酶是()
A.HMGCoA合成酶
B.HMGCoA还原酶
C.鲨烯环氧酶
D.HMGCoA裂解酶
E.甲羟戊酸激酶