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【多选题】
变频器按供电电源的分为( )A.
单相变频器
B.
两相变频器
C.
三相变频器
D.
四相变频器
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举一反三
【简答题】What did they learn about the treasure in the end?
【简答题】正常成人尿量为每昼夜 _____~_____L ,每昼夜尿量最少应有 ___________L 。
【简答题】正常成人每昼夜排出尿量约为（ ）|少尿是指每昼夜排出尿量为（ ）|多尿是指每昼夜尿量长期保持在（ ）|无尿是指每昼夜排出尿量为（ ）A. 100ml以下B. 100～500mlC. 500～1000mlD. 1000～2000mlE. 2500ml以上
【单选题】Where has this program won a gold medal?
A.
In a domestic acrobatic contest.
B.
In an international acrobatic contest.
C.
In a normal contest.
【简答题】Rock climbing is an activity in which participants climb up, down or across natural rock formations or artificial rock walls. The goal of rock climbing is to reach the top of a formation or the endpoi...
【单选题】Bill Stone is not an astronaut—he is the world's most famous caver. Leading large international teams and backed by sponsors like the National Geographic Society, he has mounted more than 50 major exp...
A.
They have explored many caves and reached the deepest cave in our planet.
B.
They have sponsored the National Geographic Society to explore caves.
C.
They have explored the outer space and set up funds for it.
D.
They }rave explored and measured the deepest gave in Jupiter.
【简答题】多尿是指每昼夜尿量长期保持在（）|少尿是指每昼夜排出尿量为（）|无尿是指每昼夜排出尿量为（）|正常成人每昼夜排出尿量约为（）A. 100ml以下B. 100～500mlC. 500～1000mlD. 1000～2000mlE. 2500ml以上
【单选题】听力原文： Two spacewalking astronauts replaced a giant broken flywheel outside the International Space Station on Monday, shoring up an outpost steering system plagued with problems for more than three ye...
A.
Spacewalking.
B.
Replacing the broken flywheel.
C.
Entering the International Space Station.
D.
Contacting the ground controllers.
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