Three important sources of dimensional change encountered with dental materials
A: A. thermal
B: B. mechanical
C: C. atmospheric
D: D. chemical
A: A. thermal
B: B. mechanical
C: C. atmospheric
D: D. chemical
举一反三
- The crankshaft and connecting rod converts energy into energy used to drive the vehicle. A: mechanical, thermal B: mechanical, kinetic C: thermal, mechanical D: kinetic, mechanical
- The production process of thermal power plant is to convert () of fuel into electric energy. A: chemical energy B: heat energy C: mechanical energy D: kinetic energy
- Climate change was probably important in both ______ and evolution of dolphins. A: execution B: B. extinction C: C. exclusion D: D. excavation
- 4) I have had ______ mild headaches all my life.A. dimensional B. visional C. occasional D. fusional A: dimensional B. visional C. occasional D. fusional B: visional C. occasional D. fusional C: occasional D. fusional D: fusional
- 【单选题】English is one of____ spoken in the world. A. the important languages B. the most important languages C. most important language D. the most important language A. A. the important languages B. B. the most important languages C. C. most important language D. D. the most important language