44 All workplaces must have smoke ________that sound a warning to people when they sense the presence of smoke.
(A) containers
(B) filters
(C) detectors
(D) mentors

答案:登入後查看
統計: A(11), B(11), C(141), D(15), E(0) #2782540

詳解 (共 2 筆)

#5205847
所有的工作場所都必須設有煙霧_____當...
(共 70 字,隱藏中)
前往觀看
1
0
#5244508
All workplaces must ...
(共 235 字,隱藏中)
前往觀看
1
0