Central Standard Time 
Combined Systems Test 
Committee on Science and Technology 
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Customer Service Team 
Central Summer Time 
CERLIST DIESEL 
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Civil Support Teams 
Computer-Supported Telephony 
Constant 
Council for Science and Technology 
Crew Station Trainer 
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Canada Social Transfer 
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centi-Stoke 
Centistokes 
Centre Spatial de Toulouse 
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CHANNEL STATUS TABLE 
Civil Support Team 
Coast 
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Compatible Sideband Transmission 
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Connected Speech Test 
Consolidated Service Test