A. 升主动脉 B. 主动脉弓 C. 降主动脉 D. 头臂干 E. 胸主动脉
A. the ability of oil to separate from water B. the temperature at which oil flows rapidly C. a measure of the water in a lube oil system D. an emulsion of different grades of oil
A. 红线 B. A1 C. A2 D. B
A. 远处的小山 B. 古塔 C. 拉索大桥灰色立柱 D. 烟囱
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