are tightened together with the engine frame and the bedplate by means of through- going stay bolts. Two central bores, one at the top and one halfway down inside the cylinder block, enclose the cylinder liner. The upper part of the cylinder block forms part of the cooling water space around the central part of the cylinder liner, whereas the lower part forms the scavenge air space. A central bore in the bottom of the cylinder block encloses the piston rod stuffing box. The bottom is double with a hollow space through which cooling water is circulated. On the exhaust side of the cylinder block there is a circular opening leading into the longitudinal scavenge air receiver of the engine. Furthermore, there is an inlet pipe for cooling and lubricating oil. The cylinder block is provided with cleaning and inspection covers for the cooling water and scavenge air spaces. VOCABULARY
upon Savage Road, a narrow road that widens as it passes N.S.A. and then shrinks again. The Baltimore-Washington Expressway runs a few hundred yards to the west. This Operations Building is 980 feet wide by 560 feet deep, and along its full width runs the longest unobstructed corridor in the country, an honor previously claimed by the 750-foot central corridor of the United States Capitol. In addition to dozens of offices and basement facilities for computers, the structure encloses a cafeteria accommodating 1,400 and an auditorium seating 500, eight snack bars, a post exchange, a dispensary with X-ray and operating rooms and dental chairs, a shoe-repair and clothes-cleaning shop, a barber shop, and a branch of the State Bank of Laurel. A system of "security conveyor belts" runs through the basement, carrying trays of documents to eight substations. A German pneumatic- tube system can whisk up to 800 containers an hour at 75 feet per second to interoffice
structure, and in various other processes in transmit force originating in the myofibrils to the organ, including immune responses and the entire muscle and ultimately, to the limb cellular recognition pathways. or structure that is moved. A relatively thick The two major types of lipid found in sheath of connective tissue, the epimysium, skeletal muscle are triglycerides and phos- encloses the entire muscle. In most muscles, pholipids. Triglycerides make up the greatest the epimysium is continuous, with tendons proportion of lipid associated with muscle. that link muscles to bones. The muscle is Triglycerides (triacylglycerides) consist of a subdivided into bundles or groupings of glycerol molecule in which the hydroxyl muscle cells. These bundles (also known as groups are esterified with three fatty acids
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