化学方法处理柴油机淡水冷却系统时,应投入适量的亚硝酸钠和四硼酸钠混合剂保持淡水PH值为()
A.7.0
B.8~9
C.10
D.11~12
参考答案:B
汉译英
1. 谢谢你把地址告诉了我,我们会保持联系的.
Thanks for telling me your address, and we'll __________ __________ __________.
2. 那些勤奋工作的人是我们的榜样.
Those __________ are hard-working are our __________ __________.
3. 他把欠我的30元钱还给了我.
He has __________ me __________ ¥30 that he owed me.
4. 我的演讲成功归功于父母的鼓励.
I __________ my success of the speech __________ my parents' encouragement.
5. 总所周知,第29届奥运会是在北京召开的.
__________ __________ __________, the 29th Olympic Games was held in Beijing, China.
地平面上有()四个基本方向,如果地图没有方向指示标识,通常默认“()”的图上方向。