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下面关于有理函数F(s)为正实函数的必要充分条件叙述错误的是()
A.
B.
C.
D.
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![](https://lstatic.shangxueba.com/jiandati/pc/images/jdt_q_wyda.png)
- · 有5位网友选择 D,占比50%
- · 有3位网友选择 A,占比30%
- · 有2位网友选择 C,占比20%
A.
B.
C.
D.
1) f(t)为实值函数的充要条件是F(-ω)=;
2) f(t)为虚值函数的充要条件是F(-ω)=-.
A、Value Value::operator -(Value);
B、ValueValue::operator -(int );
C、Value &Value::operator -(Value);
D、Value &Value::operator -(Value&);
A、忽略孔(Ignore Holes)
B、用户定义深度(User defined cut depth)
C、顶面岛(Top Off Critical Depths)
D、额外刀路(Additional Passes)
A、Zig,Zig Zag,Follow Periphery
B、Follow Part,Zig Zag,Follow Periphery
C、Trochoidal, Follow Part, Follow Periphery
D、Zig, Zig Zag, Profile
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