闭合性多根多处肋骨骨折,若骨折范围较小,治疗时采用哪种方法纠正反常呼吸最合适
A.牵引固定法
B.压力包扎固定
C.肋骨内固定法
D.胶布肋骨固定法
E.用呼吸器行辅助呼吸
参考答案:B
32. She learnt both business and history, but she knows _____ of them well, though she can speak on _____ subjects in general.
A.none; any
B.nothing; anything
C.neither; both
D.either; neither
下列哪种调制方式的抗干扰能力最强()
A.BPSK
B.QPSK
C.16QAM
D.64QAM