涅索斯(Nessus)

He’s lucky enough to have many people ___ him with the work.

A．help

B．to help

C．helped

D．helping

若已确定为胆总管下端梗阻，为明确肿块来源应首选

A．ERCP

B．十二指肠低张造影

C．ECT

D．DSA

E．MRI

—Where is Ted?

—________. [ ]

A. He's American

B. He's 12

C. He's over there

D. They're

乳癌的发生与哪一因素有关

A．初起有多个粟粒状脓头
B．初起疮形如粟，突起根浅
C．初起疮形如粟粒状脓头，坚硬根深
D．初起光软无头，红肿疼痛，范围约6～9cm
E．初起皮肤片状红斑，边界清楚，压之褪色，抬手即复

火灾探测器的传输线路，宜选择不同颜色的绝缘导线或电缆。正极“+”线应为 ( )，负极“-”线应为( )。

A．红色，绿色
B．红色，蓝色
C．红色，黄色
D．红色，黑色