颈部大静脉损伤出现严重的空气栓塞时的紧急处理是
A.结扎血管B.吻合血管C.右心室穿刺D.损伤部位局部加压E.气管插管
参考答案:C
You’ll find taxis waiting at the bus station ______ you can hire to reach your host family.
A.which
B.where
C.when
D.as
假如乘坐飞船在宇宙中接近光速行驶,高速靠近飞船的星星发出的光会因波长缩短而变成?()
A.蓝色
B.红色
C.黄色
D.桔色