起动逻辑表达式中，满足起动准备条件的输入信号之间的逻辑关系是（）。
A.逻辑与
B.逻辑非
C.逻辑或
D.逻辑或非
参考答案：A
Kommen Sie endlich herein und machen Sie die Tür zu! Es___________.
The nurse is caring for a primigravida who is scheduled for a fetal acoustic stimulation test (FAST). The nurse should explain to the client that the primary purpose of this test is to（）
A. induce contractions.
B. induce fetal heart rate accelerations.
C. shorten the contraction stress test.
D. determine fluid volume.
