Protective clothing must be worn while sampling hazardous cargo on a tanker，and as a minimum includes ______．
A hood or hard hat
B. A face mask or goggles
C. Boots
D. Chemical resistant gloves
查看答案
村镇银行最大股东或唯一股东不一定是银行金融机构。()
参考答案：错误
One of the principal dangers inherent in liquefied petroleum gas is ______．
As it warms up it becomes heavier than air
B. The way it reacts with sea water
C. The strong odor it produces
D. Its low temperature causes frostbite or freezing
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