在天然石材铺设前，应对石材与水泥砂浆交接部位涂刷( )。
A．防腐防护剂
B．防滑剂
C．抗渗防护剂
D．抗碱防护剂
参考答案：D
原发性颗粒性固缩肾
According to Standard Ⅱ (B) Duty to Employer, which of the followings is TRUE（）
A. Members are prohibited from undertaking independent practice in competition with their employer.
B. Members are prohibited from making arrangements or preparations to go into a competitive business before terminating their employment.
C. Members must obtain their employer’ s written consent to engage in an independent competitive consulting work.
