B细胞不表达下列哪一种CD分子()
A.CD154(CD40L)
B.CD19
C.CD40
D.CD79a与CD79b
E.CD80与CD86
参考答案:A
Each player of chess is trying to trap the other player’s king into a position _________
escape is impossible.
A.when
B.that
C.in which
D.from which
供货信息可以用于采购申请单生成()()
A.采购入库单
B.采购发票
C.凭证
D.采购订单