在液压系统中，管路越长，附件越多，压力损失（）。
A.越大
B.越小
C.没影响
参考答案：A
He doesn't do his homework _____. So he always makes some mistakes. [ ]
A. careful enough
B. enough careful
C. carefully enough
D. enough carefully
急腹症患者称腹痛难忍，要求用止痛药治疗，因未满足其要求而吵闹时应如何向病人解释？
