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【单选题】
ITU V.90 调制解调器（Modem） （11） 。 （11）A.
下载速率是56kb/s，上传速率是33.6kb/s
B.
上下行速率都是56kb/s
C.
与标准X.25 公用数据网连接，以56kb/s 的速率交换数据
D.
时刻与ISP 连接，只要开机，永远在线
手机使用
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反馈参考答案：
举一反三
【单选题】I got a new battery for my recorder only last week, but it seems to have ______ already.
A.
worn out
B.
run down
C.
knocked off
D.
gone off
【简答题】论述为适应道路清扫作业,对清扫机侧盘刷的性能有何要求?
【单选题】While travelling, I had to Charge up my digital camera every day as the battery _______quickly. [ ]
A.
shut up
B.
ran out
C.
ended up
D.
turned out
【单选题】---- The battery in my cell phone is running low. ---- I _____ that last night before we went to bed.
A.
was noticing
B.
have noticed
C.
had noticed
D.
would notice
【单选题】My car is not very dependable . My battery died three times this month!
A.
forceful
B.
reliable
【简答题】学前儿童患病的常见迹象有哪些?
【单选题】A: How would you like us to pack your products? B: Since there are glasses and fragile items, I think you'd better use _______.
A.
bags
B.
drums
C.
casks
D.
wooden boxes
【简答题】下列关于食用油的熔点和消化率的说法正确的有（ ）。
相关题目：
【单选题】My car is not very dependable . My battery died three times this month!
A.
forceful
B.
reliable
参考解析：
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