在EPON系统中（）用于对ONU进行唯一标识。A.LLID B.SN C.VLAN

出粉率、出勤率、合格率、发芽率，不可能达到100%的是 [ ]

A．出粉率

B．出勤率

C．合格率

D．发芽率

板式桥梁橡胶支座抗压弹性模量检验试验步骤为：将支座对准中心置于加荷承压板上，加荷至压力为，在承压板四角对称安装四只位移计后，压力缓增至[ζ]，持荷min，再卸至1.0MPa，如此三次预压完后正式加载。正式加载：自压力1.0MPa始，每级增加压应力为1.0Mpa，持荷min，读取位移百分表，至[]后卸载至1.0Mpa，min后进行下次加载循环。正式加载循环过程为3次，根据相应公式计算其抗压弹性模量。（）

A.1.0MPa3min5min10min

B.1.0MPa5min5min10min

C.1.0MPa5min3min10min

D.1.0MPa3min3min10min

二十岁男性，右颌下区无痛性软肿物，表面皮肤正常，口内检查亦未见异常。抽出黏稠而略带黄色蛋清样液体。肿物及颌下腺一并手术摘除，见肿物呈囊性，但术后不久囊肿复发

最可能的诊断是（）

A.颌下腺囊肿

B.舌下腺囊肿

C.颌下区软组织囊肿

D.鳃裂囊肿

E.以上都不是

Teams are required for most engineering projects. Although some small hardware or software products can be developed by individuals, the scale and complexity of modern systems is such, and the demand for short schedules so great, that it is no longer (1) for one person to do most engineering jobs. Systems development is a team (2) ,and the effectiveness of the team largely determines the (3) of the engineering. Development teams often behave much like baseball or basketball teams. Even though they may have multiple specialties, all the members work toward (4)．However, on systems maintenance and enhancement teams, the engineers often work relatively independently, much like wrestling and track teams. A team is (5) just a group of people who happen to work together. Teamwork takes practice and it involves special skills. Teams require common processes; they need agreed-upon goals; and they need effective guidance and leadership. The methods for guiding and leading such teams are well known, but they are not obvious.

空白（4）处应选择（）

A.multipleobjectives

B.differentobjectives

C.asingleobjective

D.independentobjectives

《高等学校科学技术学术规范指南》、《高校人文社会科学学术规范指南》、《高等学校预防与处理学术不端行为办法》属于（）。

A.政策规范

B.技术规范

C.道德规范

D.法律规范