电气除尘器结构庞杂、造价高,但有很高的除尘效率。
参考答案:对
— What's your favourite colour?
— __________.[ ]
A. It's a cat
B. It's white
C. It's a bus
D. My jeans
I sounded five short blasts to warn the vessel()the immediate danger of collision.
A.of
B.off
C.to
D.with