【简答题】(2分)对于MOSFET,正常工作时PN结均是( ) 工作。
【单选题】When Dr. Lazarus talks to the children, the children usually______.
A.
tell the pediatrician their trouble at the beginning
B.
tell the pediatrician their situation at school
C.
make sure the pediatrician will keep secret at the beginning
D.
make sure the pediatrician will know about alcohol
【单选题】60岁男性冠心病患者。稍事活动后即可有心悸、气短,根据其临床表现可诊断为
【单选题】Under no circumstance______to tell lies to parents.