单项选择题
Your vessel has completed an inspection for certification and is issued a Temporary Certificate of Inspection. The Temporary Certificate（）.
A.has the full force of the regular Certificate of Inspection B.expires six months after it is issued C.must be exchanged for a regular Certificate of Inspection within 3 months D.is retained in the custody of the Master
单项选择题 With （）, the corrosion problems are much reduced in a central cooling system.
单项选择题 安全阀一般装在容器本体（）的接管上，接管与安全阀之间一般（）阀门。
单项选择题 在Word 2003中，关于嵌入式对象，下列说法错误的是（）。
