类风湿性关节炎属于惠州特定门诊吗?申请后长期有效吗?
参考答案:
类风湿性关节炎属于惠州特定门诊,申请后特定门诊长期有效。
---Why does Jane always ask you for help?
---- There is no one else ________, is there?
A.who to turn to
B.she can turn to
C.for whom to turn
D.for her to turn
官能团定量分析,为了使反应完全经常采用( )。
A.试剂过量和加入催化剂
B.试剂过量和产物移走
C.回流加热和加催化剂
D.产物移走和加热