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【简答题】
当施工图标注不,给管按“ ”计算,排管按0.4-0.5m 计算 。
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【简答题】完形填空。 A good memory is a great help in learning a language. Everyone 1 his own language by remembering what he hears when he is a small child. And when some boys and girls live 2 with their parents, t...
【简答题】When people talk about learning a language, they usually expect to learn it 1 with clear 2 success. Actually learning a language is an endless 3 . Any natural human language is a 4 affair with many 5 ...
【单选题】It is necessary to______ a large vocabulary in learning a language.
A.
accumulate
B.
collect
C.
assemble
D.
gather
【单选题】A good memory is ______ in learning a language.
A.
a talent
B.
a great help
C.
a big hindrance
D.
a skill
【简答题】A good memory is a great help in learning a language. Everybody learns his mother language when he is a small child. 1)He hears the sounds,① ______them and then he learns to_____. Some children are li...
【简答题】气相色谱开机步骤
【单选题】使用气相色谱仪氢火焰离子化检测器时,有几个步骤,下面哪个次序是正确的 (1)气路检漏 (2)数据处理、报告打印、关机 (3)通载气 (4)设置方法参数(如柱温及检测器温度等) (5)启动色谱仪电源开关和工作站
A.
(1)→(2)→(3)→(4)→(5)
B.
(2)→(3)→(4)→(5)→(1)
C.
(3)→(1)→(5)→(4)→(2)
D.
(5)→(3)→(4)→(1)→(2)
E.
(5)→(4)→(3)→(2)→(1)
【单选题】气相色谱仪使用开机的步骤是()。
A.
开GC电源→开电脑→开工作站→打开载气等气源
B.
开GC电源→开电脑→打开载气等气源→开工作站
C.
开GC电源→打开载气等气源→开电脑→开工作站
D.
打开载气等气源→开GC电源→开电脑→开工作站
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