诊断中枢神经系统结核瘤最有价值的辅助检查是（）。 A.MRI B.正电子发射断层扫描

“x＞4”是“x≥4”的什么条件 [ ]

A、充分非必要

B、必要非充分

C、充要

D、既非充分又非必要

乳母应用后对婴儿有影响的药物()。

A．硫酸镁

B．酚酞

C．芦荟

D．石蜡

E．番泻叶

Immediately after a 1-year-old client returns from a cardiac catheterization, the nurse notes that the pulse distal to the catheter insertion site is weak. The nurse should take which of the following actions ？（）

A．Remove the pressure bandage from the insertion site.

B．Perform passive exercises on the affected extremity.

C．Notify the physician of the assessment.

D．Record the data on the nursing notes and continue to evaluate.

丽物之知

数字视频的数据量非常大，VCD使用MPEG-1对视频信息进行压缩编码后，每秒钟的数码率大约是( )。

A．150kbps

B．64kbps

C．10Mbps

D．1.2Mbps