Which of the following is not cutting work?( )
A: Leak opening
B: Bottom drawing
C: Vertical groove excavation
D: Ore break down
A: Leak opening
B: Bottom drawing
C: Vertical groove excavation
D: Ore break down
举一反三
- Which one of the following is NOT TRUE about an opening?( ) A: A drawing opening may last long in readers’ mind. B: An opening may decide the tone of the whole essay. C: An opening is of no significance. D: An opening may attract readers.
- Which of the following statements is true?( ) A: The other three options all meet the requirements B: Leveling refers to leveling the surface of ore retention pile after local ore releasing. C: Prying roof means that the roof and two sides of loose ore rock should be pryed off when the site is leveled. D: Gravity ore drawing is generally adopted for local ore releasing
- Credit Line covers all of the following but ____. A: drawing commercial papers B: granting loans C: opening letters of credit D: opening letters of guarantee
- When formal channels of communication break down, negotiators are permitted to finding alternatives and can use which of the following?
- Which of the following is the most abundant solid mineral in the seabed?( ) A: Manganese nodule B: Nickel ore C: Copper mine D: Cobalt ore