影响水泥强度试验准确性的因素有:(),(),及()。
参考答案:仪器设备;试验条件;试验操作
My younger sister is always _________ but she also likes listening to others quietly.
A.outgoing
B.angry
C.calm
D.friendly
属于物理化学靶向制剂的是()
A.乳剂
B.脂质体
C.微囊
D.免疫脂质体
E.热敏脂质体