当顶进桥穿越曲线时,工作坑一般设在曲线内侧。
参考答案:错
Use your head; nothing taught by others can have the same effect on you as _________learned
through practice.
A.those
B.what
C.that
D.the one
133Xe进行肺通气功能显像的采集方法,以下哪种说法是正确的()
A.能峰190keV,窗宽20%
B.高能高灵敏度准直器
C.矩阵64×64
D.ZOOM1.0
E.采集分吸入、平衡及清除三个时相进行