轮胎气压过低时,高速行驶轮胎会出现波浪变形温度升高而导致什么?
A.气压不稳
B.气压更低
C.行驶阻力增大
D.爆胎
参考答案:D
区域基础设施包括()。
A.区域交通运输、给排水、电力供应、用电通信以及区域防灾等
B.教育、文化、医疗卫生、体育设施及区域市场体系等
C.机场、编组站、码头、高速公路等
D.水资源保护地、风景旅游资源、矿藏资源的利用保护
动词填空 用括号内所给动词的适当形式填空。(本大题共8分,每小题1分)
小题1:The Blacks ______________ (have) dinner when I called them last night.
小题2:The girl is looking forward to __________ (receive) her mother’s advice on the new job.
小题3:Yesterday Dr. Lee ______________ (ask) to tell us his trip to Africa at first.
小题4:Boys and girls, please read the book, or you ____________ (get) lost during the visit.
小题5:Would you please ____________(not disturb) me when I sleep?
小题6:How many parts should this passage _______________ (divide) into?
小题7:Since we _______________ (do)our homework now. Let’s have a rest.
小题8:Hospital uniforms may be green because the colour _____________ (relax) patients.