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【判断题】
一般来说,硅二极管的死区电压小于锗二极管的死区电压A.
正确
B.
错误
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皮皮学刷刷变学霸
举一反三
【单选题】It took the swimmer some distance from the shore and left him there, out of his depth. What does it mean?
A.
the swimmer is taller than the depth of the water
B.
the swimmer needs swimming suit
C.
the swimmer doesn't want to go back
D.
to be in water that is too deep for you to stand in and breathe
【简答题】passage3-2
【简答题】血液从心脏流出，经主动脉后流到毛细血管，再通过静脉流回心脏．医生建立了某病人在心脏收缩的一个周期内血压P(单位：mmHg)的数学模型为P(t)= (时间单位：s). 问在心脏收缩的一个周期里，血压是单调递增的还是单调减少的？
【单选题】选出下划线单词的同义词 An eight-year doping ban excludes the swimmer from the Tokyo Olympics.
A.
blocks
B.
rules
C.
affects
D.
targets
【简答题】passage3-2
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