差压式流量计,是利用流体流经节流装置时所产生的()来实现流量测量的。
A.压力差
B.截面差
C.惯性力的作用
D.速度差
参考答案:A
Directions: The question below is followed by six choices numbered 260-265. If a choice is correct, mark A in the space provided. If a choice is not correct, mark B. Blacken one circle on your answer sheet for each number. The nurse is explaining the Bill of Rights for psychiatric patients to a client who has voluntarily sought admission to an inpatient psychiatric facility. Which of the following rights should the nurse include in the discussion
Right to a written treatment plan.
如图所示,一单匝线圈从左侧进入匀强磁场。在此过程中,线圈的磁通量将____________(选填“变大”、“变小”或“不变”)。若上述过程所经历的时间为0.1s,线圈中产生的感应电动势为0.2V,则线圈中的磁通量变化了____________Wb。