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【单选题】
晶体管工作在饱和区时的偏置状态为 （ ）。A.
发射结、集电结均正偏;
B.
发射结、集电结均反偏;
C.
发射结正偏、集电结反偏;
D.
发射结反偏、集电结正偏;
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皮皮学刷刷变学霸
举一反三
【单选题】If you are unable to attend the meeting, for ______ reason, you should inform. us in advance
A.
whatever
B.
wherever
C.
however
D.
whoever
【单选题】If you are unable to attend the interview, for _____ reason, you should inform us immediately.
A.
whatever
B.
what
C.
whichever
D.
which
【简答题】If you are unable to attend the interview, for whatever reason, you should inform us immediately.
【单选题】Please let me know if you are unable to attend the meeting.
A.
go to
B.
prepare for
C.
speak to
D.
do to
【单选题】If you are unable to come to the interview, for______reason you should inform. us ahead of time.
A.
however
B.
somewhat
C.
whatever
D.
no matter
【单选题】If you are unable to stop a diesel engine by any other means，you should ______．
A.
Discharge a CO2 extinguisher in the air inlet
B.
Pull off the distributor cap
C.
Secure the jacket water
D.
Secure the starting air supply valve
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