护理溃疡病急性大出血患者,应特别注意观察
A.腹痛B.肠鸣音C.肛门排气D.体温E.血压
参考答案:B
解析: 应警惕穿孔,要注意观察肠鸣音。
Someone called me up in the middle of the night, but they hung up ________I could answer the phone.
A.since
B.until
C.before
D.as
操作性条件反射的核心是()。
A.无关刺激
B.中性刺激
C.无条件刺激
D.强化