人不能消化纤维素,是因为人体内分解多糖的酶不能催化分解() α—1,6糖苷键。 α—1,4糖苷键。 β—1,4糖苷键。 β—1,6糖苷键。
A vessel loads 100 tons of glass jars. The mate on watch discovers that some of the cartons have been damaged and has an exception made on the Bill of Lading. What is this document called?() Damage Bill of Lading。 Letter of Indemnity。 Non-negotiable Bill of Lading。 Unclean Bill of Lading。
An un-loader is installed on an air compressor to (). bypass the high pressure stage to the low pressure stage on 100% of the air compressors in service。 prevent excessive inter-stage pressure buildup。 control compressor discharge pressure。 remove all but the frictional load during starting。
介绍他人时一般按尊者(),即“尊者优先了解情况”的原则,把较年轻的人介绍给较年长的人;把男士介绍给女士;把地位、身份低的人介绍给地位、身份高的人;把客人介绍给主人;把未婚者介绍给已婚者;把个人介绍给团体。 居前。 在前。 居后。
弯体病的预防措施是什么?
关于《观火》,下列说法正确的是哪项?()