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【判断题】
E 值是目的序列被随机搜索出来的概率,该值约接近于 0 越好。
A.
正确
B.
错误
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举一反三
【简答题】看图,完成下面的对话。 1. — ___________________________________? — It comes from the clouds. 2. — _____________ should ______________________? — Water them.
【单选题】In spite of the wide range of reading material specially designed or ______ for language learning purposes, there is yet no effective and systematic program for the reading skills.
A.
appointed
B.
'assembled
C.
acknowledged
D.
adapted
【单选题】将保温瓶的双层玻璃中间抽成真空,其目的是( )
A.
减少导热
B.
减少对流换热
C.
减少对流换热和辐射换热
D.
减少导热和对流换热
【简答题】根据图片完成句子。 1. — Where does the _____________ come from? — It comes from the _____________ . 2. — Where does the _____________ come from? — It comes from the _____________ . 3. — Where does the ________...
【简答题】听问句,找答句。 (     )1. A. It comes from the sea. B. It comes from the cloud. C. It comes from the vapown. (     )2. A. He likes fruit. B. She likes bread and milk. C. They like playing football. (     )3....
【判断题】分层度愈小,砂浆的保水性愈差
A.
正确
B.
错误
【简答题】连词成句。 1. It, clouds, comes, the, from (.) _______________________________________________ 2. for, flower, Wait, a, to, grow (.) _______________________________________________ 3. Put, in, it, sun, the...
【单选题】将保温瓶的双层玻璃中间抽成真空,其目的是
A.
减少导热
B.
减小对流换热
C.
减少对流与辐射换热
D.
减少导热与对流换热
【单选题】将保温瓶的双层玻璃中间抽成真空,其目的是
A.
绝热物系温度不发生变化
B.
恒温物体与外界(环境)无热能交换
C.
温度变化物体的焓值一定改变
D.
物体的焓值改变,其温度一定发生了变化
【单选题】将保温瓶的双层玻璃中间抽成真空,其目的是
A.
减少导热
B.
减少对流换热
C.
减少对流与辐射换热
D.
减少导热与对流换热
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