根据GB/T156-2007《标准电压》规定，用电设备的额定电压与电力网的额定电压的关系是（）

A、耐磨性能好

B、热膨胀系数低

C、冲击强度高

D、室温塑性好

A、1.302

B、2.302

C、0.302

D、3.302

E、2.203

A、who

B、which

C、that

D、whom

A、向银行借入长期借款，存入银行

B、用银行存款购买原材料

C、向国外进口设备，款项未支付

D、用银行存款归还长期借款

E、购买生产设备，款项暂未支付

有关系代数表达式：与其执行结果等价的pgSQL语句为（ ）。

A、SELECT DISTINCT examinee.eeid,eename,eid FROM eeexam,examinee WHERE examinee.eeid=eeexam.eeid;

B、SELECT DISTINCT examinee.eeid,eename,eid FROM eeexam CROSS JOIN examinee WHERE examinee.eeid=eeexam.eeid;

C、SELECT DISTINCT eeid,eename,eid FROM eeexam NATURAL JOIN examinee;

D、SELECT DISTINCT examinee.eeid,eename,eid FROM eeexam JOIN examinee ON examinee.eeid=eeexam.eeid;

E、SELECT DISTINCT eeid,eename,eid FROM eeexam JOIN examinee USING(eeid);

F、SELECT DISTINCT examinee.eeid,eename,eid FROM eeexam,examinee;

G、SELECT DISTINCT examinee.eeid,eename,eid FROM eeexam CROSS JOIN examinee;

H、SELECT DISTINCT eeid,eename,eid FROM eeexam NATURAL JOIN examinee WHERE examinee.eeid=eeexam.eeid;

I、SELECT DISTINCT examinee.eeid,eename,eid FROM eeexam JOIN examinee WHERE examinee.eeid=eeexam.eeid;

A、短纤维的强度、硬度高，耐磨

B、短纤维与铝基体有良好的界面结合

C、短纤维的端部易引起应力集中

D、短纤维的端部附件铝基体易产生裂纹