下列纸张中,哪种纸张不适合做双面彩色印刷?()
A. 铜版纸
B. 硫酸纸
C. 白卡纸
D. 白底白板
测设已知水平距离、测设已知水平角度、测设已知高程点是测设的三项基本工作。
A. 正确
B. 错误
客运专线电力高低压远动开关、停送电倒闸作业,以及保护装置的投、操作由()负责操作。
A. 作业负责人
B. 供电段供电调度
C. 铁路局供电调度
D. 铁道部供电调度
What is NOT a requirement of the reinspection for a tank barge with a certificate of inspection valid for two years? ()
A. The reinspection will be made between the fourteenth and sixteenth months
B. The inspector shall examine all accessible parts of the vessels's hull
C. The inspector shall examine the vessel's machinery as well as equipment
D. The scope of the reinspection shall be the same as for the inspection for certification,but in less detail