心室纤颤,胸外直流电除颤能量选择()。
A.20~50ws
B.50~100ws
C.100~150ws
D.150~200ws
E.200~300ws
参考答案:E
be动词的适当形式填空
1. —What color _______ your pencils?
—They _______ blue.
2. —How ______ Frank?
—He ______ fine, thanks.
3. The jackets ________ green.
4. —________ you Tony?
—Yes, I _______.
5. Those ________ her brothers.
6. Here _______ my family photo.
7. I _______ Helen. You ________ Tony.
排入大气的气体安全阀放空管出口,应高出操作面()m以上,并引至室外。
A.1.0
B.1.5
C.2.0
D.2.5