风湿细胞核染色质分布特点是()
A.均匀分布呈粗颗粒状
B.集中在中央呈细线状向核膜放射
C.集中在核膜下使核膜增厚
D.分布在核膜下呈车轮状
E.均匀分布呈细颗粒状
参考答案:B
After the new equipment was introduced,they produced________machines this year as the
year before.[ ]
A.as twice many
B.as many twice
C.twice as many
D.twice many as
D2-30B型中间继电器,触点长期允许通过的电流不大于( )A。
A.1
B.3
C.2
D.5