门脉高压症者手术心功能正常时,为维持有效循环血量,保证最佳组织灌注,宜使红细胞比容保持在()
A.20%左右
B.30%左右
C.40%左右
D.50%左右
E.60%左右
参考答案:B
SpyWare and other fonns of malware afe the biggest online threat to your computer's (1) nowadays. There malicious (2) which get to your PC through freeware, shareware, commercial sites, deceptive pop-ups or in any other way, can record your surfing habits and sites you visit, share your personal information with their partners. Any personal (3), when in wrong hands, can leave you a victim of an"identity theft"by steeling your credit (4) details, birth records and other (5) information.
空白(3)处应选择()
A.information
B.estate
C.life
D.existence
糖尿病的形成原因有多种。下图1中的①②③表示由三种机体免疫异常引起的糖尿病;图2为健康人体内某一时间段的血糖含量变化曲线。请据图回答下列问题:
从免疫学的角度分析,这三种糖尿病都属于()病。其中,()可以通过注射胰岛素治疗。