第十三条 船舶抵押权的设立、变更、转让和消灭，应当向船舶登记机关登记；未经登记，不得对抗善意第三人。
Now the astronauts have arrived home, they will soon be taken to the Johnson Space Centre in Houston, Texas, where they will be checked over by medical experts.
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size of a task) it can allocate storage for it in the stack frame of