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【判断题】
一般计算渠道输水损失都是考虑渠道的漏水损失，其余部分由于量少而忽略不计。（）A.
正确
B.
错误
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举一反三
【简答题】（1）计算： 8 - 2 （ 2 +2）+ 12 3 ； （2）解方程：x 2 -2x-4=0．
【简答题】A.He has climbed the same mountain last year. B.He hasnt traveled around the world yet. C.He definitely does not want to go. D.Hes always been looking forward to climbing that mountain. Questions 19 t...
【简答题】数字电路中,电路的输出状态仅取决于该时刻的输入状态,而与电路原来所处的状态无关,称为 。
【简答题】A.He hasnt had time to find another apartment. B.He hasnt cleaned the apartment since his mother visited. C.His mother dusted his apartment the day before last. D.His mother was the last person to com...
【单选题】He will not leave for America—for one thing, he hasnt recovered yet, and ______, he doesnt like work abroad.
A.
in addition
B.
what's more
C.
for another
D.
as well
【简答题】A.He hasnt finished the book yet. B.He doesnt agree with the woman. C.He doesnt like the novel. D.He cant understand the novel.
【简答题】计算 （1） 8 - 2 ( 2 +2)+ 12 3 （2） 2 3 -1 + 27 -( 3 -1 ) 0 ．
【简答题】计算（1） 8 - 2 ( 2 +2)+ 12 3 ；（2） 1 2 24 - 4 3 18 ÷(2 8 × 1 3 54 )
【简答题】计算： （1）（-1） 2011 +|- 2 |-（2- 3 ） 0 +2 -1 （2） 8 - 2 （ 2 +2）+ 12 3 ．
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