点检标准按专业和使用条件分为()。
A.通用点检标准
B.专业点检标准
C.日常点检标准
D.定期点检标准
参考答案:A, B
If she ______ here, she would help you. [ ]
A. was
B. were
C. be
D are
为明确诊断,下列哪项检查最有价值
A.尿蛋白定量
B.血清补体C3
C.双肾B超
D.抗核抗体