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【单选题】
分组交换的主要优点不包括( )。A.
线路资源统计复用
B.
网络可靠性提高
C.
传输时延大
D.
经济性好
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反馈参考答案：
举一反三
【单选题】肛管排气时，适宜的插管深度和置管时间是
A.
7～10cm，30分钟左右
B.
10～15cm，20分钟左右
C.
10～15cm，1小时左右
D.
15～18cm，20分钟左右
E.
15～18cm，1小时左右
【单选题】肛管排气时,适宜的插管深度和置管时间是
A.
10~15cm,20分钟左右
B.
10~15cm,1小时左右
C.
7~l0cm,30分钟左右
D.
15~18cm,20分钟左右
E.
15~18cm,1小时左右
【单选题】When there was a short________in the conversation, I asked if anyone would like anything to drink.
A.
blank
B.
space
C.
pause
D.
wait
【简答题】“Anything?”I asked, looking at him narrowly . In a(n) ________ way
【单选题】肛管排气时,适宜的插管深度和置管时间是:( )
A.
7～lOcm，30分钟左右
B.
10～15cm，20分钟左右
C.
10～15cm，1小时左右
D.
15～18cm，20分钟左右
E.
15～18cm，1小时左右
【单选题】—Where’s Cathy?—______Anything wrong?—I asked her to do something, but she wouldn’t.—To wash her hair before supper.
A.
She is upstairs in her room. What for?
B.
She is ill. What did you tell her to do?
C.
She is upstairs in her room. What did you tell her to do?
D.
She has gone to see a doctor. What is she going to do?
【简答题】I asked him not (say) _______ anything about our contract until the end of the month.
【简答题】I asked her not______(tell)others anything about our research until the end of the week．
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