使用R22的风冷式空调器,在夏季制冷调试时,其排气压力约为()Mpa。
A.2.4
B.1.9
C.1.5
D.1.2
参考答案:B
The person we referred to____ us a report tomorrow.
A.giving
B.will give
C.gave
D.give
ACP