双氧水加热器在()加热。
A、管封
B、吹管
C、消毒
D、生产
参考答案:C, D
Tim is in good shape physically _____ he doesn't get much exercise.[ ]
A. if
B. even though
C. unless
D. as long as
贵重中药密封吸湿干燥法的密封类型有
A.密封货柜(货橱)
B.密封坛缸
C.密封木箱
D.密封铁桶
E.密封库