题目: 定义数学运算<a>=a(a+1)2对任意整数a都成立,如果b=<8>,那么<b>=( )A.36B.72C.666D.1332 答案: ∵<8>=8(8+1)2=36,∴b=36,∴<b>=<36>=36(36+1)2=666.故选C.
题型:选择题 My father said he ______ me a present unless I _____ in passing all the exams. [ ]A. had not given; had not succeeded B. would not give; succeeded C. will not give; succeed D. would not give; will succeed 查看答案
题型:单项选择题 A3/A4型题 女,82岁,体重45kg。术前诊断为股骨颈骨折,拟行人工股骨头置换术。既往史高血压10年,慢性支气管炎30年。术前检查发现肥厚性梗阻性心肌病,无自觉症状;ECG正常;UCG显示室间隔增厚(14mm),左室流出道血流速度增快,与左室流出道之间的最大压差为40.4mmHg,左室舒张功能减低。未用术前药。静脉诱导用异丙酚90mg+芬太尼50μg+琥珀胆碱100mg,气管内插管;维持麻醉用异氟醚+N2O/O2吸入,间断静脉注射芬太尼和维库溴铵。术中行直接动脉压测定,连续监测ECG、SpO2、尿量等。术中血压波动明显,低血压期间采用数次血管活性药物,血压维持120~150/60~80mmHg。术毕患者清醒,拔管。术后恢复良好。术中血压波动,出现血压下降时宜先选用哪种升压药()。A.麻黄碱B.去甲肾上腺素C.多巴胺D.多巴酚丁胺E.肾上腺素 查看答案
题型:选择题 ----- She doesn’t play the piano, but she likes singing and dancing.-----_________.A.So I amB.So it is with my sisterC.So am ID.Neither do I 查看答案