SC/PC型光纤接头的含义是（）。
A、方头平面纤
B、圆头平面纤
C、方头斜面纤
D、圆头斜面纤
参考答案：A
After the introduction of the modern equipment, the factory produced _______ cars as the year before.
A．twice more
B．as twice as many
C．twice as many
D．twice the amount of
男性，34岁，体检时超声发现脾门处结节（见图），根据超声图像诊断为（）
A.副脾
B.脾门处淋巴结
C.转移癌
D.脾血管瘤
E.左肾上腺肿瘤
