到2050年,亚洲、非洲、南美洲将占到世界能源需求总量的85%左右。
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磨床的头架、尾座顶尖中心连线与工作台移动方向在垂直平面的平行度误差,影响加工精度,外圆柱将被磨成鼓形。(误差分析)
A. 正确
B. 错误
In the absence of a custom or special contract to the contrary,the Shipowner is not bound to ()the consignees that he is ready to unload on arriving at the port of discharge.
A. notice
B. notify
C. notificate
D. note