After calling the CALL SUBR instruction in the execution subroutine section, the value of SP is reduced by 2; the answer is D;
Because SP is a high-tech color road coating imported from the United States. The product has the world's leading unique patented technology and has applied for patent protection in more than 50 countries, and has obtained inspection and certification from the internationally authoritative Green Construction Safety Evaluation Agency (LEED). This product uses a unique molded coating process on asphalt pavement to create various decorative three-dimensional modeling effects.
The application of cutting-edge polymer coating technology gives the asphalt pavement a pleasing color, which not only protects the road surface, but also makes the traditional asphalt pavement shine. This product has the characteristics of unique shape, rich colors, excellent performance, green environmental protection, and beautification of the environment. This product can reduce road radiant heat and urban heat island effect, lower the road temperature by 3-5 degrees, and effectively save energy.
Extended information:
SP uses telecommunications and information services provided by public network infrastructure. The state implements a licensing system for SP business operations. To operate SP business, one must obtain a telecommunications business operating license issued by the information industry department of the State Council or the telecommunications management agency of a province, autonomous region, or municipality directly under the Central Government in accordance with regulations. No organization or individual may engage in SP business activities without obtaining a telecommunications business license.
According to the "Telecommunications Regulations of the People's Republic of China", SP Company's business is divided into basic telecommunications business and value-added telecommunications business. Basic telecommunications business refers to the business that provides public network infrastructure, public data transmission and basic voice communication services. Value-added telecommunications services refer to telecommunications and information services provided by public network infrastructure.
According to statistics, through China Mobile, China Unicom, China Telecom and other three operators, the number of 3G users in China in 2009 has been close to 5 million, and 3G has gradually transformed from an avant-garde concept to practical applications.