【判断题】The 6x7 rule indicates that no more than 6 words per line and no more than 7 lines per slide.
【单选题】Pyramids are large structures with square bases and four smooth, triangular-shaped sides that come to a point at the top. Several ancient peoples used pyramids as tombs or temples. The most famous pyr...
B.
The Mochica Indians of Peru.
C.
The Indians of Central Mexico.
D.
The Indians of South America.
【判断题】焊接缺陷是指焊缝内部缺陷不包括表面缺陷和热影晌区缺陷。
【判断题】应用 奥美拉唑 后可能出现头痛、头晕等神经系统症状 。( )