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【单选题】
下列哪个单词的划线部分不是发[ w ]的音
A.
w et
B.
ans w er
C.
o ne
D.
be w are
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参考答案:
举一反三
【单选题】对计算采样系统的稳态误差非常有用的Z变换基本定理是:
A.
线性定理
B.
初值定理
C.
终值定理
D.
复数位移定理
【单选题】Z变换的终值定理对计算采样系统的( )非常有用。
A.
输出响应
B.
采样周期
C.
稳态误差
D.
稳定性
【单选题】The evening party _____. You are a little late. [     ]
A.
just begun
B.
just has begun
C.
has just begun
D.
has begun just now
【简答题】A.The man has just started talking to the woman. B.The man has just finished talking to the woman. C.The man and the woman are husband and wife. D.The man and the woman are indifferent to each other.
【单选题】What do you think their mother has just done?
A.
She has gone to the grocer's
B.
She has just clone her shopping.
C.
She has bought a few jars.
D.
She has been in all day.
【单选题】James has just arrived, but I didn't know he ______ until yesterday.
A.
was coming
B.
came
C.
had been coming
D.
will come
【单选题】He______the leader of the Model Group in our factory.
A.
has just been appointed
B.
has just appointed
C.
just appointed
D.
has just being appointed
【单选题】Today is Jenny’s wedding day.She________to Tom.
A.
just has got married
B.
has just married
C.
was just married
D.
has just got married
【判断题】Petco has just purchased a sizable plot of land on which it will build a store building with a large parking lot. Across the street is a collection of specialty shops and a furniture store. Petco will...
A.
正确
B.
错误
【单选题】( )机构aqaqqa是槽轮机构的应用实例
A.
冲床工作台自动转位
B.
放映机卷片机构
C.
缝纫机踏板机构
D.
机车联动装置
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