自然电位曲线幅度随地层泥质含量增加而（），随地层电阻率的升高而（）。
参考答案：降低；降低
—"We would like some cups of tea, please."
—"_____ would you like?"
—"Four, please."[ ]
A. What
B. How
C. How many
D. How much
什么是金属塑性成形？
