防空工程当采用柴油发电机组做备用电源时，应设置自动启动装置，并能在30s内供电。()
参考答案：对
Mr. Smith will go back to London tomorrow.
Yes. I will see ______ off at the airport.
A. he B. his C. him
治疗瘰疬痰核，应选用的药物是（）.
A.贯众
B.连翘
C.大青叶
D.板蓝根
E.金银花
