Copper's greater conductivity versus other metals enhances the electrical energy efficiency of motors. This is important because motors and motor-driven systems account for 43%-46% of all global electricity consumption and 69% of all electricity used by industry. Increasing the mass and cross section of copper in a coil increases the electrical energy efficiency of the motor. Copper motor rotors, a new technology designed for motor applications where energy savings are prime design objectives, are enabling general-purpose induction motors to meet and exceed National Electrical Manufacturers Association (NEMA) premium efficiency standards.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What percentage of electrical consumption does motor systems use in secrecy?
Ah, so.. unanswerable

Both the Shanghai Stock Exchange and the Shenzhen Stock Exchange suspended trading of companies based in southwestern China. Copper rose over speculations that production in southwestern China may be affected, and oil prices dropped over speculations that demand from China would fall.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Besides the Shanghai Stock Exchange, what other exchange suspended trading of southwestern China stock?
Ah, so.. Shenzhen Stock Exchange

Imported Chinese labourers arrived in 1810, reaching a peak of 618 in 1818, after which numbers were reduced. Only a few older men remained after the British Crown took over the government of the island from the East India Company in 1834. The majority were sent back to China, although records in the Cape suggest that they never got any farther than Cape Town. There were also a very few Indian lascars who worked under the harbour master.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): How many imported Chinese laborers were there at the peak of importation?
Ah, so..
618