用外径千分尺加上一定辅助量具，可以测量圆锥体的角度和圆锥直径。( )
参考答案：对
直观时运用变式方法的目的是 （ ）
A．激发兴趣
B．引起注意
C．丰富想象
D．区分本质与非本质特征
Describe the personal liabilities that may be incurred when carrying out business in the following formations:
(c) a partner in a general partnership. (4 marks)
