土壤热交换主要包括
A. 辐射
B. 分子传导
C. 潜热交换
D. 对流和湍流
土壤热量主要来源()
A. 太阳辐射
B. 近地面大气热量传输
C. 空气长波辐射
D. 水汽相变
词汇与结构A basic hydraulic system consists of several ________.
A. components
B. organs
C. parts
D. functions
词汇与结构It ________ the system fluid when needed and provides room for thermal expansion.
A. refreshes
B. replenishes
C. enforces
D. provides