唐山试题（Tangshan examination questions）.docVIP

唐山试题（Tangshan examination questions） Individual choice (1 points per game, 80 points) 1, according to the content of the expression information, electrical diagram is divided into (B) species. A, 1 B, 2 C, 3 D, 4 2, the production of mechanical circuit can be said: (A). A, electrical principle, B, wiring diagram, C, installation position, D, wiring table 3 、 electrical graphical symbols in the form of (D) species. A, 1 B, 2 C, 3 D, 4 4 、 electrical diagram includes: circuit diagram, function chart, system diagram and block diagram, and (A) etc.. A, position diagram B, component diagram C, component drawing, D and assembly drawing 5, as shown in the figure below, the graphical symbol is (B). A, new symbol isolation switch B, old symbol high voltage isolating switch C, new symbol load switch D, old symbol high voltage load switch 6. One of the main uses of circuit diagrams is (B). A provides the installation location B, which is the basic data for designing the wiring diagram C, indicating function diagram D, indicating block diagram 7, wiring diagram, generally need to provide: the relative position of the project, project code, terminal number and (A). A, wire number B, component number C, unit number D, wiring diagram number 8, read the M7130 type grinder electrical principle diagram, want to finally read (D). A, main circuit, B, control circuit, C, electromagnetic workbench, control circuit, D, lighting and indicating circuit 9, the second step in reading the auxiliary circuit is (D). A, look at the power B, distinguish auxiliary circuit, how to control the main circuit C, looking for electrical components of the relationship between D, look at the lighting circuit 10 、 the direction of the current is (C). The direction of A, negative charge, direction of movement, B, direction of electron motion C, the direction in which the positive charge moves, the opposite direction of the positive charge of the D 11, about the concept of potential, (C) the statement is corre