设计管路时，对压力较高的气体，其管内流速可选得（）。
A.高一些
B.低一些
C.设计管路时不用考虑气体压强
D.那三个说法都不正确
参考答案：A
The nurse is caring for a client who underwent a total hip replacement. What should the nurse and other caregivers do to prevent dislocation of the new prosthesis ？（）
A．Keep the affected leg in a position of adduction.
B．Use measures other than turning to prevent pressure ulcers.
C．Prevent internal rotation of the affected leg.
D．Keep the hip flexed by placing pillows under the client's knee.
微生物气味常有泥腥味的（）
A、细菌
B、霉菌
C、酵母
D、放线菌
