()是运用声、光、色、味等信号提出警告已引起人们注意,采取措施,避免危险的设施。
A.安全附件
B.联锁装置
C.报警装置
D.防护装置
参考答案:C
The second half of his voyage was __________ dangerous part, during which he sailed round the Cape Horn.
A.more
B.most
C.the most
D.the more
下列因素中可致摄碘率增高的是
A.食用海带
B.服用乙胺碘呋酮
C.生长发育期
D.甲状腺炎毒性期
E.服用甲状腺素