DCS画面中的PIC,P表示(),I表示(),C表示()。
A.压力,显示,控制
B.显示,压力,控制
C.液位,显示,控制
D.液位,压力,控制
参考答案:A
用适当的情态动词填空。
1. There being no bus that night,we ______ go home on foot.
2. You _____ worry about him,he is not a child.
3. You _____ opened the letter, it was written for me.
4. — Must I finish my homework today?
— No,you____.
5. You _____ play football on the road because it is dangerous.
6. The windows _____ cleaning.
导致肠易激综合征的原因不包括以下哪一条()
A.特殊饮食
B.肠道感染
C.精神因素
D.免疫异常
E.肠道菌群失调