在研究流动液体时,将即()又()的假想液体称为理想液体。
参考答案:无粘性;不可压缩
In relation to civil contracts:
(a) Explain the provisions of the Civil Code in respect of interpretation of civil contracts. (5 marks)
人们通常无意识地观望高度为0.7~1.7米,上下幅度为1米,通常与视线大约成()范围内的物品最易引人注意。
A.20°
B.30°
C.45°
D.60°