如要提高低压蒸汽减压阀后的压力，减压阀体做何调整？
参考答案：
将阀体调节螺栓的固定螺母松开，调节螺栓顺时针拧动，直至达到所需压力，再将螺母锁定。
根据所给动词的适当形式填空。
1. Let Millie_________(wash) the dishes.
2. Jim, _________(not be) late for school next time.
3. Lucy, why not_________(go) running after supper?
4. Does your classmate often forget_________(bring) his homework to school?
5. I don't have much time ________(talk) with my parents.
6. Sometimes my cousin ________（fly）a kite with me in the afternoon.
7. _______ Millie _______(do) her homework at school?
8. Each student _________(worry) a lot about their exams(考试).
9. Do you know a cartoon movie _________(call) Kungfu Panda?
10. David, is it your first time ________(eat) rice dumplings?
接种卡介苗可预防以下哪种疾病（）
A.结核病
B.乙型肝炎
C.脊髓灰质炎
D.百日咳
E.破伤风
