螺杆式制冷系统开机10~30min后,排气温度应稳定在()。
A.30~50℃
B.50~60℃
C.60~90℃
D.100~110℃
参考答案:C
He has spent, 1 think, a lot __________ time in reading than she has.
A.of
B.more
C.much more
D.of much more
采用“飞水法”粉碎()
A.玉竹、牛膝
B.炉甘石、珍珠
C.樟脑、冰片
D.蟾酥、牛黄
E.柏子仁、苏子