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【简答题】
Situation awareness, or SA, is the perception of environmental elements within a volume of time and space, the understanding of their meaning, and the projection of their status in the near future. It is also a field of study concerned with perception of the environment critical to decision-makers in complex, dynamic areas from aviation , air traffic control, power plant operations, military command and control — to more ordinary but nevertheless complex tasks such as driving an automobile or motorcycle. Situation awareness (SA) involves being aware of what is happening around you to understand how information, events, and your own actions will impact your goals and objectives, both now and in the near future. Lacking SA or having inadequate SA has been identified as one of the primary factors in accidents attributed to human error. Thus, SA is especially important in work domains where the information flow can be quite high and poor decisions may lead to serious consequences, such as piloting an airplane, functioning as a soldier, or treating critically ill or injured patients. Having complete, accurate and up-to-the-minute SA is essential where technological and situational complexity on the human decision-maker are a concern. SA has been recognized as a critical, yet often elusive foundation for successful decision-making across a broad range of complex and dynamic systems, including aviation and air traffic control, emergency response and military command and control operations, and offshore oil and nuclear power plant management.
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【单选题】若有以下定义语句 struct link { int data; struct link *next; } *p, *q, *r; 指针 p 、 q 和 r 分别指向一个链表中的三个连续的结点。如图所示。 现要将 q 和 r 所指结点的前后位置交换,同时要保持链表的连续,以下错误的程序段是
A.
r->next= q; q->next = r->next; p->next = r;
B.
q->next= r->next; p->next = r; r->next = q;
C.
p->next= r; q->next = r->next; r->next = q;
D.
q->next= r->next; r->next = q; p->next = r;
【单选题】男性，65岁。以往有劳力型心绞痛，长期服用硝酸酯类药物，病情尚稳定。近1个月来胸痛又发作，部位于胸骨下段，且多发生在午睡时或晚间入睡后，服硝酸甘油无效，起床站立后可缓解。以往有胆结石史但从无发作。 近1个月的胸痛发作原因，尚应除外下列哪种可能性
A.
不稳定型心绞痛
B.
恶化型劳力性心绞痛
C.
自发性心绞痛
D.
胆心综合征
E.
食管裂孔疝
【单选题】程序段如下所示,下列说法正确的是: #define A 3 #define B(A) ((A+1)*a) int a=4; ...... x=4*(A+B(7));
A.
程序错误，不允许嵌套定义
B.
x=140
C.
程序错误，宏定义不能有参数
D.
x=124
【单选题】有如下所示的 Java 程序段: int total = 0; for ( int i = 0; i < 4; i++ ){ if ( i==1) { continue;} if ( i==2){ break; } total +=i; } total的值最后是多少
A.
0
B.
1
C.
3
D.
6
【单选题】若有以下定义: struct link { int data; struct link *next; } a,b,c, *head, *p; 其中 , 指针 head 指向变量 a, p 指向变量 c , a.next 指向变量 b ,链表结构如下图所示: a b c ┌──┬──┐ ┌──┬──┐ ┌─...
A.
a.next = c; c.next = b;
B.
head.next = p; p.next = head.next;
C.
head->next = &c; p->next = head->next;
D.
(*head).next = p; (*p).next = &b;
【单选题】男性，65岁，以往有劳力型心绞痛，长期服用硝酸甘油，病情尚稳定，近1个月来胸痛又发作，部位于胸骨下段，且多发生在午睡时或晚间入睡后，服硝酸甘油无效，起床站立后可缓解。以往有胆石史但从无发作。 近1个月胸痛发作原因应除外下列哪种可能性
A.
恶化型劳累性心绞痛
B.
不稳定型心绞痛
C.
自发性心绞痛
D.
食管裂孔疝
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