Questions 49 to 52 are based on the following passage:
Ostrum GE, the second largest power company in the Nordic countries,
officially opened its first Hydrogen Energy Station (HES), with technology products provided by Gredler Energy Systems Corporation. The new station will supply clean hydrogen fuel to three fuel cell buses as part of the prestigious Green Europe Advanced Transport (GREAT) program. Stockholm (斯德哥尔摩) is one of four GREAT cities that will be using Gredler Energy hydrogen infrastructure products.
Mr. Peter Russell, Chief Operating Officer of Gredler Energy, was in Stockholm for the station opening and commented, "The opening of this station represents the first step in the introduction of a hydrogen infrastructure in the City of Stockholm. Ostrum and the City of Stockholm have taken an essential step towards creating a pathway to environmentally sustainable urban transportation solutions and we are delighted to be part of this important movement."
The Stockholm HES is comprised of four modules: pressurized water electrolysis-based hydrogen generation, compression, high-pressure storage and hydrogen fuel dispenser. The station is capable of producing approximately 120kg per day of high-purity, high-pressure hydrogen using Gredler Energy’s proprietary technology. Each fuel cell bus carries approximately 40kg of hydrogen at 350bar (5,000psi).
Gredler Energy Systems Corporation is the world leading developer and supplier of integrated hydrogen solutions, all using the company’s proprietary hydrogen generation water electrolysis technology along with products from corporate partners.

What is true about the GREAT program（）