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【单选题】
It took me a lot of _____to run for half an hour.A.
force
B.
power
C.
strength
D.
energy
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反馈参考答案：
举一反三
【单选题】在一个单链表中,已知q所指结点是p所指结点的前驱结点,若在q结点和p结点之间插入s结点,则执行()
A.
s->next=p->next;p->next=s;
B.
p->next=s->next;s->next=p;
C.
q->next=s;s->next=p;
D.
p->next=s;s->next=q;
【单选题】在一个单链表中,已知 q 所指结点是 p 所指结点的直接前驱。现要在 q 所指结点和 p 所指结点之间插入一个 r 所指的结点,要执行的操作应该是( )。
A.
r->Next = p->Next;
B.
p->Next = r->Next;
C.
q->Next = r; r->Next = p;
D.
p->Next = r; r->Next= q->Next;
【单选题】在一个单链表中，已知q所指结点是p所指结点的前驱结点，若在q和p之间插入s结点，则执行( )。
A.
s-＞next=p-＞next;p-＞next=s;
B.
p-＞next=s＞next;s＞＞next=p;
C.
q-＞next=s;s-＞next=p;
D.
p-＞next=s;s-＞next=p;
【单选题】The ideal controllable switch has the following characteristics. Which is wrong? ( )
A.
Block arbitrarily large forward and reverse voltages with zero current flow when off.
B.
S witch from on to off or vice versa long-termly when triggered.
C.
C onduct arbitrarily large currents with zero voltage drop when on.
D.
V anishingly small power required from control source to trigger the switch.
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