学生小王设计的邮筒是由直径为0.6米的半球与底面直径为0.6米,高为1米的圆柱组合成的几何体。求邮筒的表面积(不含其底部,且投信口忽略不计,精确到0.01平方米)。
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how many tips of having fun are there in the mini-lecture?
A. two
B. three
C. four
D. five
Read the advertisement. What is being advertised?
An internship with a shopping mall.
B. A college course.
C. A job opportunity for a waiter.
69.AfterEffects的运动追踪工具可以对以下哪几种不同的运动方式进行追踪:
A. 位置
B. 旋转
C. 位置及旋转
D. 仿射边角与透视边角
81.下列哪几项属于摄像机调节工具?
A. UnifiedCameraTool
B. OrbitCameraTool
C. TrackXYCameraTool
D. TrackXYZCameraTool