每件成人救生衣的结构应能在_____内能正确地穿好救生衣。A.1minB.40sC.30s
每件成人救生衣的结构应能在_____内能正确地穿好救生衣。
A.1min
B.40s
C.30s
相关考题:
跳水时,如遇海面有油火,应迅速穿好救生衣,再跳入水中。()
每件成人救生衣的结构应能在_____内能正确地穿好救生衣。
A.1min
B.40s
C.30s