[判断题]工作期间，工作负责人若因故暂时离开工作现场时，应指定能胜任的人员临时代替，离开前应将工作现场交待清楚，并告知工作许可人。( )
A.正确
B.错误

Anything, if it concerns all nations in the world, we need standards to regulatate it.
Space flight and air travel would shock time travelers from the mid-19th century. People considered such thing impossible back again: But when it comes to that gem of late 20th century technology, the Internet, the time travelers might well say:" Been there. Done that."
They have the masons to say so.
Both system grew out of the cutting-edge science of their time. The telegraph’s land lines, underwater cables, and clicking things reflected the 19th century’s research in electromagnet- ism. The Internet’s computers and high-speed connections reflect 20th century, and material technology.
But, while small devices make a global network possible, it takes human cooperation to make it happen. To do so, nations negotiated these standards through ITU—the International Telegraph Union—a century and a half ago.
Consider a co
A. they were totally ignorant of it
B. they would consider such a thing as a dream
C. they had seen similar things before
D. they had thought of it for quite a long time