CY613-A型井下压力计是属于()压力计。
A、弹簧管式
B、弹簧式
C、微差
D、电子
参考答案:A
It was the first time she______ at a summer school and she really enjoyed it
A.has been.
B.was.
C. had been.
D.would be
在运球方法中速度最快的运球方法是()
A.脚背正面运球
B.脚背外侧运球
C.脚背内侧运球
D.脚内侧运球