当RNC3810机柜有（）以上数量的扩展框时，需要再增加SXB板，才能满足ISL电缆连接的要求。
A.2个
B.3个
C.4个
D.5个
参考答案：C
If you want to see the chairman of the department, you'd better make an ___ with his secretary first.[ ]
A. admission
B. agreement
C. assumption
D. appointment
关于尿肾小管上皮细胞，下列错误的叙述是
A．比尿白细胞稍大
B．胞质内常见脂肪滴
C．胞质内常见小空泡
D．正常时可见1～3个/HPF
E．肾移植术后如排异反应可成片脱落
