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同一路径元防干扰要求的线路,可敷设于同一槽盒内;槽盒内的绝缘导线总截面积(包括外护套)不应超过槽盒内截面积的40%,且载流导体不宜超过 ( )根。 A. 10 B. 20 C. 30 D. 40
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【简答题】支撑的作用是什么？柱间支撑的作用又是什么？
【简答题】简述柱间支撑的作用？
【简答题】Task 1 Punctuate the following passage. most american people are fond of cats and or dogs it is said that every year they spend about $5.4billion on their pets including $1.5 billion on pet food four ...
【简答题】Punctuate the following passage: most american people are fond of cats and or dogs it is said that every year they spend about $5.4billion on their pets including $1.5 billion on pet food four times t...
【单选题】66 直径为250mm的气缸套,其最大极限尺寸Lmax=250.122mm,最小极限尺寸Lmin=250.050mm,实测尺寸L=250.100mm,则其实际偏差为________。
A.
0.022mm
B.
-0.050mm
C.
+0.100mm
D.
0.072mm
【简答题】Tasks that fall under the 20 percent are things that many people usually don’t like doing. However, it is this 20 percent that will play the most important part in your success or failure. Examples of...
【简答题】In Britain, people have different attitudes(态度)to the police. Most people generally 1 them and the job they do, but some people said that the police shouldn’t have special 2 . What does a policeman ac...
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