One of the reasons why VCRs are so difficult to use is that ______.
A. the desirers are often insensitive to the operational complexities of their machines
B. the range of features provided is unlimited
C. there is no ideal way of controlling quality
D. their designers often ignore the complaints of their uses
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苯海索:
A. 抗胆碱作用
B. 直接激动多巴胺受体
C. 二者均可
D. 二者均不可
右肺下缘的体表投影在肩胛线处与
A. 第10肋相交
B. 第8肋相交
C. 第6肋相交
D. 第7肋相交
E. 第4肋相交
共用题干题患儿男,3天,足月顺产,生后5小时出现反复抽搐,皮肤轻度黄染,面部较长,眼距宽,耳位低,耳郭有切迹,下颌小。B超检查患儿房间隔缺损。血白细胞8.5乘以十的九次方/L 引起患儿抽搐的原因是()
A. 生后吃奶少,致低血糖惊厥
B. 核黄疸致惊厥
C. 颅内压增高致惊厥
D. 甲状旁腺发育不良,致低钙惊厥
E. 先天性心脏病致脑缺氧惊厥
甘油三酯增高常提示患有()
A. 溶酶体累积病
B. 糖原累积病
C. 过氧化物酶病
D. 肝豆状核变性
E. 苯丙酮尿症