调整血脂药物主要降低血胆固醇的是（）。
A.辛伐他汀
B.吉非贝齐
C.脉乐康
D.烟酸
E.消胆胺
参考答案：A
____ our mother will allow ____ to see a film after supper?
A．Who do you think; leaving
B．Who do you think; to leave
C．Do you think who; leaving
D．Do you think who; to leave
等离子弧焊必须对电极及喷嘴进行有效的水冷却，冷却水的流量不得小于( )。
A．2 L/min
B．3 L/min
C．6 L/min
D．8 L/min
