目前诊断冠状动脉病变最准确的方法（） A.心电图 B.超声心动图 C.CT D.磁共

When Marine Lt. Alan Zarracina finally did the splits after months of struggling with the difficult pose in yoga class, the limber women around him applauded.
Zarracina, a 24-year-old Naval Academy graduate and flight student, admits he would have a hard time explaining the scene to other Marines. Each class ends with a chant for peace. Then, instructor Nancy La Nasa hands students incense sticks as a gift for their 90 minutes of back bends, shoulder stands and other challenging positions. Zarracina has tried to drag some of his military friends to class, but they make fun of hint. "It’s not necessarily considered masculine,’ he said.
Still, the popular classes, based on ancient Hindu practices of meditation through controlled breathing, balancing and stretching, are catching on in military circles as a way to improve flexibility, balance and concentration. A former Navy SEAL told Zarracina about the class.
The August edition of Fit Yoga, the nation’s second-largest yoga magazine with a circulation of 100,000, features a photo of two Naval aviators doing yoga poses in full combat gear aboard an aircraft carrier. "At first it seemed a little shocking--soldiers practicing such a peaceful art," writes editor Rita Trieger. Upon closer inspection, she said, she noticed "a sense of inner calm’ on the aviators’ faces. "War is hell, and if yoga can help them find a little solace, that’s good,’ said Trieger, a longtime New York yoga instructor.
Retired Adm. Tom Steffens, who spent34 years as a Navy SEAL and served as the director of the elite corps’ training, regularly practices yoga at his home in Norfolk, Va. "Once in a while I’ll sit in class, and everyone is a 20-something young lady with a 10-inch waist and here I am this old guy, ’ he joked. Steffens, who said the stretching helped him eliminate the stiffness of a biceps injury after surgery, said the benefits of regular practice can be enormous. "The yoga cured all kinds of back pains," he said. "Being a SEAL, you beat up your body."
Yoga breathing exercises can help SEALs with their diving, and learning to control the body by remaining in unusual positions can help members stay in confined spaces for long periods, he said. "The ability to stay focused on something, whether on breathing or on the yoga practice, and not be drawn off course, that has a lot of connection to the military," he said. "In our SEAL basic training, there are many things that are yoga-like in nature.

We can infer from the passage that yoga

A．has been popular ever since its advent in India.

B．is an ancient Hindu practice of meditation.

C．focuses on improving muscular strength.

D．is becoming increasingly popular among soldiers.

不论何种头痛均可选取

A．百会

B．太阳

C．风池

D．列缺

E．足三里

多个相邻的毛囊及具所属皮脂腺或汗腺的急性化脓性感染（）

A．疖

B．痈

C．丹毒

D．急性蜂窝织炎

E．脓肿

一台PC计算机系统启动时，首先执行的是 (36) ，然后加载 (37) 。在设备管理中，虚拟设备的引入和实现是为了充分利用设备，提高系统效率，采用 (38) 来模拟低速设备(输入机或打印机)的工作。
已知A、B的值和表达式A²/(5A+B)的求值过程，且A、B已赋值，该公式求值过程可用前驱图 (39) 来表示，若用P/V操作控制求值过程，则需要 (40) 的信号量。

A．主引导记录

B．分区引导记录

C．BIOS引导程序

D．引导扇区

患儿于1周前受凉后出现持续发热，体温最高达40.0℃，咳嗽气喘痰鸣，呼吸气粗，面红目赤，溲赤便干，舌红苔黄腻，脉滑数。其证候是

A．风热犯肺证

B．邪热壅肺证

C．肝火犯肺证

D．燥热犯肺证

E．痰热壅肺证