汽轮机具有()的优点。
A、功率大、效率高
B、结构复杂、易损件少
C、运行安全可靠,调速方便、振动大、防爆
D、功率大、效率低
参考答案:A
How to keep the homeless __________ with food and clothing is still under discussion.
A.supplying
B.supplied
C.being supplied
D.to be supplied