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【单选题】
功率放大电路的工作方式有甲类、乙类和甲乙类等,其中甲乙类放大器中放大管的导通角 。
A.
2π
B.
大于 π 小于 2π
C.
小于 π
D.
π
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参考答案:
举一反三
【判断题】如果遇到下图的工程地质条件,基础绝对不能浅埋。
A.
正确
B.
错误
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【简答题】根据磁性质的不同,可以将物质分为3类:顺磁性物质、逆磁性物质和( )。
查看完整题目与答案
【单选题】Half of the students ____ made the same mistake. [ ]
A.
has
B.
have
C.
is
D.
are
查看完整题目与答案
【单选题】Half of the students in our class _____ girls now. [ ]
A.
is
B.
am
C.
are
D.
were
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【简答题】饭店管理公司的培训服务有全员基础培训、专业理论培训、( )培训。
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【单选题】有一种材料,其力学性能(室温)如下:杨氏模量 E=400GPa ,断裂韧度 K IC =3MPa•m 1/2 ,抗拉强度 R m ( σ b ) =250MPa ,可以判断该材料更像
A.
金属材料
B.
高分子材料
C.
陶瓷材料
D.
不确定
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【单选题】碱解氮的测定中,将土样置于扩散皿( ),在扩散皿( )加硼酸-指示剂溶液2ml,盖上毛玻璃
A.
内室,内室
B.
内室,外室
C.
外室,外室
D.
外室,内室
查看完整题目与答案
【单选题】Half of the students _ to the concert given by Andy Lau. They said it was wonderful. [ ]
A.
has been
B.
has gone
C.
have gone
D.
have been
查看完整题目与答案
【单选题】Nearly half of the students in this school ______ from Asia.
A.
is
B.
comes
C.
are
查看完整题目与答案
【单选题】Half of the students will have sports, and the rest _____ to be here in the classroom studying.A
A.
12. Half of the students will have sports, and the rest _____ to be here in the classroom studying. A.is
B.
was
C.
were
D.
are
查看完整题目与答案
相关题目:
【判断题】如果遇到下图的工程地质条件,基础绝对不能浅埋。
A.
正确
B.
错误
查看完整题目与答案
【简答题】根据磁性质的不同,可以将物质分为3类:顺磁性物质、逆磁性物质和( )。
查看完整题目与答案
【单选题】Half of the students ____ made the same mistake. [ ]
A.
has
B.
have
C.
is
D.
are
查看完整题目与答案
【单选题】Half of the students in our class _____ girls now. [ ]
A.
is
B.
am
C.
are
D.
were
查看完整题目与答案
【简答题】饭店管理公司的培训服务有全员基础培训、专业理论培训、( )培训。
查看完整题目与答案
【单选题】有一种材料,其力学性能(室温)如下:杨氏模量 E=400GPa ,断裂韧度 K IC =3MPa•m 1/2 ,抗拉强度 R m ( σ b ) =250MPa ,可以判断该材料更像
A.
金属材料
B.
高分子材料
C.
陶瓷材料
D.
不确定
查看完整题目与答案
【单选题】碱解氮的测定中,将土样置于扩散皿( ),在扩散皿( )加硼酸-指示剂溶液2ml,盖上毛玻璃
A.
内室,内室
B.
内室,外室
C.
外室,外室
D.
外室,内室
查看完整题目与答案
【单选题】Half of the students _ to the concert given by Andy Lau. They said it was wonderful. [ ]
A.
has been
B.
has gone
C.
have gone
D.
have been
查看完整题目与答案
【单选题】Nearly half of the students in this school ______ from Asia.
A.
is
B.
comes
C.
are
查看完整题目与答案
【单选题】Half of the students will have sports, and the rest _____ to be here in the classroom studying.A
A.
12. Half of the students will have sports, and the rest _____ to be here in the classroom studying. A.is
B.
was
C.
were
D.
are
查看完整题目与答案
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