提示细胞免疫缺陷最直接简便的检查方法是()
A.皮肤试验
B.T细胞绝对值记数
C.E花环试验
D.血清免疫球蛋白测定
E.T细胞体外功能检测
参考答案:B
He jumped to his feet, thinking that the planes were going to ________.
A.take off
B.keep off
C.get off
D.turn off
个人外汇管理办法中直系亲属不包含()。
A.父母
B.子女
C.配偶
D.外孙