CRH1在进行制动测试前,必须()。
A、施加停放制动
B、施加紧急制动
C、缓解停放制动
D、缓解所有制动
参考答案:A
判断休克已纠正除血压正常外,尿量每小时至少应稳定在()
A.25ml以上
B.30ml以上
C.40ml以上
D.50ml以上
E.60ml以上
根据中英文提示及句意,写出句中所缺单词,使句子意思完整正确。
1. Mr. Smith will (到达) at our school next Wednesday.
2. Now there is less air (污染) in our hometown.
3. Many young people like to listen to (流行) songs.
4. Simon, one of my classmates. Seldom (climb) Ziti Mountain.
5. We live in the same building. Our rooms are (in a higher place than) Mr. and Mrs. Green's.