柴油机燃油在注入燃油箱前应在容器中静止沉淀()以上,然后再加入油箱。
A.24h
B.48h
C.72h
D.l00h
参考答案:B
下列对可摘局部义齿间接固位体的作用的描述中不正确的是()。
A.辅助固位作用,间接防止义齿向脱位
B.对抗侧向力,防止义齿摆动
C.平衡作用,防止义齿旋转
D.支持作用,防止义齿下沉
E.稳定作用,防止义齿翘起
句型转换。
根据要求,变换下列各句。
1. Jim is more athletic than any other student in his class. (改为同义句)
Jim is the _______ athletic _______ all the students in his class.
2. Li Hong was born on June third , 1993. (对画线部分提问)
_______ _______ Li Hong born ?
3. Gina has lunch at school (用next week 改写句子)
Gina _______ _______ _______ _______ lunch at school next week.
4. I met my English teacher on the way to school.(改为一般疑问句).
_______ you _______ your English teacher on the way to school?
5. It's 10 minutes' walk from school.(对画线部分提问)
_______ _______ is it from school?