()是铜的密度。
A、9.8g/cm3
B、7.8g/cm3
C、8.8g/cm3
D、8.9g/cm3
参考答案:D
用所给词的适当形式填空。
1. I enjoy ____ (talk) about things with friends in English.
2. When I listen to music, I am very ____ (relax).
3.—What language do you speak? —I speak ____ (Japan).
4. Look at the boy! He's ____ (lie) on the grass.
5. I often go ____ (shop) with my mother on weekends.
应用人月费单价法计算工程咨询服务费,由( )等部分组成。
A.酬金
B.可报销费用
C.不可预见费
D.管理费
E.预见费