字体的（）可以分为齐头齐尾、齐头不齐尾、齐尾不齐头、齐中点和不规则形
A.对齐分布
B.段落间距
C.版面设计
D.组合设计
参考答案：C
Most of his ______ about the hard ______ in the steel ______. [ ]
A. work is; work; works
B. work is; job; works
C. works are; jobs; work
D. works are; work; works
阵发性室上性心动过速
A．P波呈双峰B．P-R间期逐渐延长C．P波消失，代之以f波D．P波与QRS波群完全无关E．P波为逆行型，与QRS波群关系恒定
