促使疾病向恶化或死亡等不良结局转化,是由于()
A.正邪相争
B.正虚邪恋
C.正气衰竭,邪气独盛
D.正气不足,邪气亦衰
E.邪去而正不复
参考答案:C
I’m used to ________ in the house which _______ to keep books and magazines.
A.living; uses
B.live; was used
C.live; used
D.living; was used
大口径开孔作业时,开孔刀具转速一般控制在()内。
A、可控范围内
B、规定范围
C、标准范围
D、企业规定范围