不存在free lunch，但却存在free trade。()
不存在free lunch，但却存在free trade。()
相关考题：
关于free函数的描述错误的是()A.函数原型是int*free(int*p)B.使用free函数时需要头文件stdlib.hC.使用free函数时需要强制类型转换D.free函数中的参数可以是任意的指针变量
Evaluate the following command and its output:Which two statements correctly interpret the output?() A. FREE_SPACE indicates only the space that is currently unallocated.B. ALLOCATED_SPACE indicates only the space currently allocated and in use.C. FREE_SPACE indicates only the space that is currently allocated and available for reuse.D. ALLOCATED_SPACE indicates both the space currently allocated and used, and the space that is available for reuse.E. FREE_SPACE indicates both the space that is currently allocated and available for reuse, and the space that is currently unallocated.
Evaluatethefollowingcommandanditsoutput：SQLSELECT*FROMdba_temp_free_space；TABLESPACE_NAMETABLESPACE_SIZEALLOCATED_SPACEFREE_SPACELMTEMP250609664101048576149561088Whichtwostatementscorrectlyinterprettheoutput？（）A.FREE_SPACEindicatesonlythespacethatiscurrentlyunallocated.B.ALLOCATED_SPACEindicatesonlythespacecurrentlyallocatedandinuse.C.FREE_SPACEindicatesonlythespacethatiscurrentlyallocatedandavailableforreuse.D.ALLOCATED_SPACEindicatesboththespacecurrentlyallocatedandused，andthespacethat isavailableforreuse.E.FREE_SPACEindicatesboththespacethatiscurrentlyallocatedandavailableforreuse，andthespacethatiscurrentlyunallocated.
若有以下定义则能保留链表其它结点,而删除p所指向结点的程序段是() A.head-next=p-next；free（p）B.head-next=p；p-next=head-next；free（p）C.free（p）；head-next=p；p-next=head-nextD.free（p）；head-next=p-next
设rear是指向非空带头结点的循环单链表的尾指针，则删除起始结点的操作可表示为( )A．s=rear;B．rear=rear—＞next; rear=rear—＞next; free(rear); free(s);C．rear=rear—＞next—＞next;D．s=rear—＞next—＞next; free(rear); rear—＞next—＞next=s—＞next; free(s);
下列选项，_____可以用来释放结果集？A．mysqli_result-＞free()B．mysqli_result-＞close()C．mysqli_free_result()D．mysqli_result-＞free_result()
4、如果p是q的前一个结点，那么删除单链表中q结点，执行的两条语句是什么？A．p-＞next=q; free(q);B．p-＞next=q-＞next; free(q);C．p=q-＞next; free(q);D．q=p-＞next; free(q);
12、free命令报告处于free状态的内存非常低，这意味着系统内存配置不足。