荧光抗体直接法的最大特点是（） A.特异性差，敏感性高 B.不够敏感，不常用 C.特

第一节：单句改错（共5小题，每题1分，满分5分）

小题1:I would like to change this red coat with a green one .

小题2:We all find English of great important in the world today .

小题3:We are sure his coming on time .

小题4:The students as well as their teacher has arrived at the school gate.

小题5:He thought he could pass the driving test ,however he failed .

下列因素与黑素形成无关的是（）

A.甲状腺素

B.Cu

C.精神因素

D.维生素B族

E.酪氨酸酶

下列指征中不属于Child B级的是( )

A．血清胆红素＞51μmoL/L
B．血清蛋白30～35g/L
C．腹水易控制
D．肝性脑病轻
E．营养状态良

简述CQT测试时长。