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【判断题】
用四爪单动卡盘装夹加工偏心套时,若测得偏心距偏小时,可将靠近卡盘轴线的卡爪再紧一些。( )
A.
正确
B.
错误
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【单选题】在图中所示放大电路,已知U cc =6V、R c =2KΩ、R B =200Kω、 =50。放大电路的静态工作点为( )。
A.
30微安
B.
1.5毫安
C.
3豪安
D.
1豪安
【单选题】: money or property brought by a woman or her husband at marriage
A.
veil
B.
official
C.
dowry
D.
perform
【单选题】175. 在下图中所示放大电路,已知 , , , 。 若 减很小,三极管工作在( )状态。
A.
放大
B.
截止
C.
饱和
D.
导通
【简答题】在图所示放大电路中,已知三极管3DG4的β=80,r b =300Ω。
【单选题】- The girl __all her pocket money to the people in the Southwest for the serious drought(旱灾).   - What a good girl!
A.
took away              
B.
gave up              
C.
gave away
【简答题】简述造林整地的作用?
【单选题】They are the heirs ___________. a) who have priorities over others b) who have the legal right to receive the property, money or title.
A.
a) who have priorities over others
B.
b) who have the legal right to receive the property, money or title.
【简答题】简述造林整地的作用、方式及其特点。
【单选题】: money or property brought by a woman or her husband at marriage
A.
dowry
B.
official
C.
veil
D.
perform
【单选题】在图中所示放大电路,已知Ucc=6V、Rc=2KΩ、RB=200Kω、β=50。放大电路的静态工作点为( )。
A.
mg src="http://p.ananas.chaoxing.com/star3/origin/817ef654113361adc41e6c385a0498a4.jpg">
B.
30μA
C.
1.5mA
D.
3mA
E.
1mA
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