EBCT是哪种CT的缩写（）
A.高分辨率CT
B.CT血管造影
C.电子束CT
D.普通CT
E.螺旋CT
参考答案：C
Tom tried to __________ in German.
A．understand himself
B．make himself understanding
C．make himself understood
D．make himself understand
下列属于非离子型表面活性剂的是
A．十二烷基硫酸钠B．苯扎溴铵C．泊洛沙姆D．卵磷脂E．硬脂酸胺
