识别船舶保安薄弱环节的最有效的方法是
为了保证生产和工人的人身安全,压力容器的()都必须有足够的强度。
属于私人、家庭的单项调查资料()。
The patient ______ now ______ carefully.
MRK Consulting Ltd has been operating in the global market since 1988. We havesuccessfullyplaced hundreds of IT & Banking professionalsin leading companies inthe Finance, Banking and IT industries.
Is there ______________ to tell us ? No, nothing.
Dad went to buy some __________ as __________ for my cousin.
适用《1966年国际载重线公约》的船舶为
与滴虫性阴道炎发病原因直接相关的是()
临产的重要标志是()