男性，52岁，高血压5年。4小时前突然出现持续胸痛来诊，心电图见下图，查体心音低钝，

A client with multiple sclerosis has been prescribed baclofen. The nurse teaches the client about the action of the drug. Which of the following is an accurate instruction regarding this drug’s action

A. "Baclofen will decrease your fatigue and help increase your energy levels. "
B. "Baclofen will help relieve the muscle spasms that you have been experiencing. "
C. "It is an antibiotic that will help treat your urinary tract infection. "
D. "Taking this drug will help decrease the visual problems you have been having. "

梁的受载情况对于中央截面为反对称（如图）。Q_C和M_C分别表示梁中央截面上的剪力和弯矩，则下列结论中（）项是正确的。

A．Q_C=0，M_C=0

B．Q_C=0，M_C≠0

C．Q_C≠0，M_C=0

D．Q_C≠0，M_C≠0

下列哪项属于第一级预防（）

A.乳腺自检

B.戒烟限酒

C.定期体检

D.功能康复

E.筛检

患者丁某，女，70岁。呃逆不止，胸脘痞闷，舌淡苔白，脉沉迟。治宜选用（）

A.橘皮竹茹汤

B.丁香柿蒂汤

C.旋覆代赭汤

D.吴茱萸汤

E.理中丸

界址距离测量可用电磁波测距仪或钢尺，使用电磁波测距仪时，距离一般不超过（）m，个别放宽至300m。

A.100

B.150

C.200

D.250