【单选题】All audience ______show their tickets to enter the theatre. A.. are required to B. are required C. require D. Should be required
【简答题】(共12分) (1)在某容积不变的密闭容器中,有可逆反应:mA(g)+nB(g) pC(g)+qD(S)△H<0如图某反应过程中各物质物质的量n(mol)随时间t的变化曲线图。 ①该反应的平衡常数表达式为(各物质浓度的指数用数值表示): 。 ②若充入A,K值 (填一定增大、一定减小、或可能增大也可能减小、不变);正反应速率____(填增大、减小、不变)。 ③若体积为10升的密闭容器中,500℃、有...
【多选题】一家大型汽车客运公司,拥有不同类型大型客车400辆,均为柴油发动机,拥有自己的修理厂,同时对外维修其他小型客运公司的大客车。请回答下列问题。下列关于汽车检测维修设备的选择和使用,正确的有:
A.
根据生产规模、工艺流程和作业方法,配备先进的检测仪器和设备
B.
合理配备操作人员。对于贵重设备,应配备具有专业技术知识和技能的高级技工和专业技术人员
C.
对于一般检测维修设备,操作人员不需要经过专业培训,会使用即可
【单选题】One of the purposes of United Nations is to achieve international co-operation without distinct
A.
252. One of the purposes of United Nations is to achieve international co-operation without distinction as to race,____, language or religion. A.sex
【单选题】对于氟利昂制冷系统,当( )时,采用双级压缩。
【简答题】If a certification is required on the commercial invoice (1) where a signed invoice is required by the credit, the certification ( ) must/( ) (need not) be separately signed. (2) where a signed invo...
【简答题】微生物制药生产中的培养基按照用途可分为: 、 和 等三大类。
【单选题】2) Time moved so slowly when I was at Po-Po's .
A.
Time passes slowly because visits with Po-Po are always laid back and relaxing.
B.
Time passes slowly because the author thinks visits with Po-Po are a bit boring.