牛奶制品包装上进过超高温灭菌处理的英文标志是（）
A、UHR
B、UHM
C、UHT
D、UHA
参考答案：D
Bob insisted that he ____ nothing wrong and ____ from work. [ ]
A. did; won't be fired
B. had done; not be fired
C. should do; mustn't be fired
D. do: shouldn't be fired
K4型转向架是（）转向架。
A.径向
B.摆动式
C.构架式
D.组合式
