关于张力性气胸的叙述不正确的是
A.最严重的气胸类型
B.胸腔内压进行性增高
C.有纵隔扑动
D.有皮下气肿
E.急救须立即在锁骨中线第2肋间用粗针穿刺减压
参考答案:C
下列有关地球内部圈层的说法,正确的是
①以莫霍面和古登堡面为界,地球内部由里向外可以划分为地壳、地幔、地核三个圈层
②地壳的厚度不均匀,大陆地壳较厚,大洋地壳较薄
③地幔以古登堡面为界分为上地幔和下地幔两层
④地核是地球内部三个圈层中温度最高的一层[ ]
A、①②
B、③④
C、①③
D、②④
9.When ______ at the ticket office, my brother and I found we didn’t have enough money to buy tickets for ______ of us.
A.arrived; the two
B.arrived; two
C.arriving; the two
D.arriving; two