【单选题】高温作业分为三种类型,下列( )不正确。
【单选题】某生产车间气温达35℃,湿度为93%,该环境下工作属于
【单选题】高温高湿的生产环境可对人体健康产生影响。下列作业中,属于高温高湿作业的是( )。
【单选题】The ras oncogene in Clark T. ’ s malignant polyp differs from the c-ras proto-oncogene only in the region that encodes the N terminus of theprotein. This portion of the normal and mutant sequences is ...
A.
An insertion that disrupts the reading frame of the protein
B.
A deletion that disrupts the reading frame of the protein
C.
A missense mutation that changes one amino acid within the protein
D.
A silent mutation that produces no change in the amino acid sequence of the protein
E.
An early termination that creates a stop codon in the reading frame of the protein
【单选题】In order to avoid misconnections due to a failed node in an MS-SPRing, Alarm Indication Signals (AISs) are sent on every channel normally terminating in that node. What is the name of this process?()
E.
node failure insertion
【单选题】测量近用瞳距时黑色箭头应指向()标记处。