Why didn’t people begin to use unmanned vehicles in undersea exploration until r

游客2023-10-06 66

问题 Why didn’t people begin to use unmanned vehicles in undersea exploration until recently?
It is because of the ______.
[br] When must the sonar devices be placed?
Before the ______.

选项

答案 undersea vehicle dives

解析

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Why didn’t people begin to use unmanned vehicles in undersea exploration until r

Likemostpeople,Iwasbroughtuptolookuponlifeasaprocessofgetting

Theadvantageofoverheadbridgesisthat______.[br]Whatdooldpeoplethink

Wemustservethepeopleheartandsoul.A、我们必须全心全意地为人民服务。B、我们必须用心和灵魂为人民服务。C、我们

Beforeliberation,thelaboringpeopleworkedhardonlytoliveapoorlife.A、解放

Mostparentsandteachersdonotlikeyoungpeopletoreadcomicbooks(连环画),

Mostparentsandteachersdonotlikeyoungpeopletoreadcomicbooks(连环画),

Mostparentsandteachersdonotlikeyoungpeopletoreadcomicbooks(连环画),

Heescapedfromthebattlefieldonly______bythelocalpeople.A、killedB、toki

VisitorstotheUnitedStatespossiblyfeelthatcitypeopleofthecountryare

ManyvisitorstotheUnitedStatesfindthatthefastpaceatwhichpeoplemo

Itisnecessarythateveryone______acopyofthisbook.A、hasB、couldhaveC、will

Childrenfrompoorfamiliesarealreadyayearbehindinvocabularytestswh

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