压力容器在试验过程中发生哪些情况应立即停止试验，查明原因？
参考答案：
发生下列情况应立即停止试验：
1.异常响声；
2.压力下降；
3.表面油漆剥落。
用所给动词的适当形式填空。
1. The teacher is (count) the books now.
2. Don't close the door. (open) the door, please.
3. The boy isn't standing in a boat. He is (sit) in a boat.
4. The students are not talking, they (write).
5. Edith (have) many things to do after class.
6. John often (help) his friends with their English.
7. Mike (go) to the park with his parents and sister on Saturday.
8. — Are you listening to me, Joy? —Sorry, I . (think)
9. Lin Tao is in the tree. He can't (get) down.
10. My mother (make) cakes every Friday. It is Friday today.
患者男性，24岁。于炎热夏季出现腹泻、腹痛症状，每日腹泻十余次，疑似食用变质食物所致，考虑细菌性痢疾。为明确诊断，进一步需做的检查是（）
A.粪便常规检查
B.粪便镜检
C.粪便细菌学培养
D.应用PCR技术检测粪便核酸
E.粪便免疫学检查
