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【简答题】
已知A、B、C坐标分别为A（3，0），B（0，3），C（cosα，sinα），α∈（0，π） （1）若 | AC |=| BC | ，求角α； （2）若 AC ? BC =-1 ，求 2si n 2 sinα+2sinαcosα 1-tanα 的值．
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【简答题】简述嵌入式系统的定义
【简答题】1.3 1.6 1.7 1.8 1.10 1.11 1.16 1.18 1.21 1.25
【单选题】_______ the lady was very rich, she always felt unhappy.
A.
Unless
B.
Because
C.
If
D.
Though
【简答题】简述嵌入式系统的定义?
【简答题】8 4 25 -3.875-2 1 8 -1.16 ．
【简答题】Fill in the blanks with the words given below, changing the form if necessary. Fill in each blank with one word only. damage deny public inspect actually location structure claim r...
【简答题】Fill in the blanks with the words given below, changing the form if necessary. damage deny inspect actually location structure claim amount 1. Bees communicate by dancin...
【单选题】Stella gave a lot of money to the charity _______ she was not very rich.
A.
if
B.
since
C.
though
D.
because
【简答题】请简述嵌入式系统的定义。
【单选题】_______ the lady was very rich, she always felt unhappy.
A.
Unless
B.
Though
C.
If
D.
Because
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