中国近代第一个以法令的形式公布学制是()
A、壬寅学制
B、癸卯学制
C、壬戌学制
D、壬子学制
参考答案:A
If we go on using energy so wastefully, ______ are that our oil wells will be dried up ______ new
energy sources can be found to replace oil.[ ]
A. chances; before
B. difficulties; after
C. questions; since
D. problems; as
经典的适形放疗需要确定的射野参数不包括哪项()
A.照射方向
B.射线能量
C.射野机器单位
D.楔形板角度
E.射野权重