I’ve promised to attend your party and I’ll ______ my word.
A.hold
B.keep
C.follow
D.take
答案:B
成人肝大小正常范围为
A.深吸气时肋缘下3cm以内B.深吸气时肋缘下2cm以内C.剑突尖端下3cm以内D.剑突根部下3cm以内E.剑突根部下6cm以内
X射线管的()接地。
A.阴极
B.阴、阳两极
C.阳极
D.铍窗