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【单选题】
A user’s workstation currently has four connected IDE devices. Which of the following could be added to the workstation to allow more ATA devices to be added to the workstation?（）A.
Network Interface card
B.
Port expansion card
C.
Serial interface card
D.
Modem card
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【单选题】-- I know this is the latest type but it's secondhand. $20 -- that's my last offer. -- OK. It's a(n) ___________.
A.
business
B.
trade
C.
agreement
D.
deal
【简答题】由一条多肽链组成的蛋白质没有_________结构，由几条多肽链通过_________连接的蛋白质也没有_________结构。
【单选题】A: What can I do for you, sir? B: I ’ d like to buy some trousers. How much is this style? A: It ’ s $ 50 a pair. B: Can you give me a discount? A: I can give you a 15% discount, this is my last offer...
A.
$ 170.
B.
$ 30.
C.
$ 185
D.
$ 215.
【单选题】脊髓突然被横断后，断面以下脊髓所支配的骨骼肌的紧张度
A.
增强，但能恢复正常
B.
降低，能恢复但与正常不同
C.
降低，但能恢复正常
D.
增强，但不能恢复正常
E.
基本不变
【单选题】---I know this is the latest type but it’s second hand. $40 ----that’s my last offer. --- OK. It’s a(an) _________.
A.
business
B.
trade
C.
agreement
D.
deal
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