传感器的作用点在铅垂方向距被推丁砖下表面之上的距离，多孔砖为（）
A.10mm
B.15mm
C.20mm
D.40mm
参考答案：D
Cheer up! ________things as they are and you will enjoy every day of your life. [ ]
A. Taking
B. To take
C. Take
D. Taken
发动机冷却水温度正常在（）之间。
A.70—80ºC
B.80—90ºC
C.85—95ºC
