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【单选题】
一个项数为偶数的等比数列，它的偶数项和是奇数项和的2倍，又它的首项为1，且中间两项 的和为24，则此等比数列的项数为（ ）A.
6
B.
8
C.
10
D.
12
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反馈参考答案：
举一反三
【单选题】How to program a NAVTEX receiver to reject certain messages? .
A.
The transmitting station's two-digit identification can be entered to de-select reception of its broadcasts.
B.
Choosing a message category' s single letter (A - Z) identifier and then deselecting or de-activating.
C.
Entering the selcall of the transmitting station.
D.
Pressing”00”in the transmitter's ID block.
【单选题】---How was the television program last night?
A.
-Super! Rarely ________ so much media attention.
B.
a program attracted
C.
did a program attract
D.
a program did attract
E.
attracted a program
【简答题】在汽车网络中，用 来约定各模块的优先权A. 通信协议
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