已知,表高7000ft,气温+15°C,相应的修正高度大约是()
A.8000ft
B.8500ft
C.7400ft
参考答案:C
The comments which he made ______ marketing bothered his boss greatly.
A.being concerned
B.concerned
C.be concerned
D.concerning
一个标准大气压相当于()m水柱高度。
A.9.33
B.10.33
C.11.33
D.12