罐头杀菌公式10'-30'-15'/121℃ 所代表的意义______。
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盐水火腿加工中,滚揉按摩的作用(1)______,(2)______,(3)______
Because of his heavy workload, he seems to be__________ in strength.
A. lacking
B. shorting
C. needing
D. running
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A. strength
B. efforts
C. energy
D. time