LOTCA脑认知能力评定时间约为()
A.30min
B.45min
C.60min
D.75min
E.90min
参考答案:A
下列仪器中需进行定期校正的是()
A.量杯
B.分析天平
C.移液管
D.刻度吸管
E.滴定管
Her health _____ under the pressure of work and she had to stay in hospital for a month. [ ]
A. broke up
B. broke down
C. broke out
D. broke away