无母线电气主接线的形式有桥形接线、()和单元接线。
参考答案:角型接线
情景选择。
1. 当有人问你丽丽正在做什么?你应该回答:[ ]
A. She is a doctor.
B. She is watching TV.
2. 你想说每个人都在学英语。你应该说: [ ]
A. Everyone are learning English.
B. Everyone is learning English.
3. 你想表达Danny在写信,应该说:[ ]
A. Danny is writing a letter.
B. Danny is reading the newspaper.
4. 有人问你李明在哪里?你应该回答:[ ]
A. He is in the corner.
B. He is playing cards.
关于外周血单核细胞增多定义和临床意义的叙述,正确的是()
A.成人>0.8×109/L
B.儿童5%
C.妊娠时,与中性粒细胞变化相反
D.常见于急性感染期
E.出生2周的婴儿有生理性单核细胞减少