Is it only recently ___ he has had a family himself?
A.when
B.if
C.that
D.which
答案:C
淋巴结转移性癌的诊断依据是()。
A.淋巴结肿大
B.淋巴结质地变硬
C.淋巴结疼痛
D.淋巴结内出现早型细胞
E.淋巴结内出现癌巢
设备伪影不可能由下面哪种因素引起().
A.机器主磁场强度
B.磁场均匀度
C.软件质量
D.磁体重量
E.附属设备