螺栓受到初紧力后便相应产生一定的()变形,其内部应力为()。
A、弹性,压应力
B、弹性,拉应力
C、塑性,拉应力
D、塑性,压应力
参考答案:B
Many students know what they want to be in the future* . We think boys are different from girls. Here is a survey in Green High School. Let’s look at the diagram* .
小题1:The diagram tells the result of ____ job choices in Green High School.
A.the teachers’
B.the boys’
C.the girls’
D.the students’小题2:About 50% of the boys want to be _____ in the future.
A.bank clerks
B.teachers
C.shop assistants
D.policemen小题3:About _____ of the girls want to be doctors.
A.5%
B.35%
C.20%
D.30%小题4:Girls like _____ best.
A.teachers
B.shop assistants
C.doctors
D.bank clerks小题5:How many students want to be shop assistants in the future?
A.50%
B.30%
C.35%
D.We don’t know.
关于流动资产周转率,以下说法中不正确的是( )。
A.流动资产周转率指一定时期成本费用总额与流动资产平均余额的比值
B. 流动资产周转率反映流动资金的周转速度
C.流动资产周转率是企业营运能力的综合表现
D.流动资产周转率有正指标和逆指标两种