柱塞泵是根据泵的()来调节流量的。
参考答案:行程
-I think drinking milk is good for our health.
-Yes, I agree _____ you. [ ]
A. to
B. with
C. on
D. in
对诊断消化性溃疡穿孔最有价值的临床表现是
A.突发上腹部剧痛
B.腹式呼吸消失
C.上腹部压痛明显
D.上腹部有反跳痛
E.肝浊音界消失