偏心堵塞器支承座台阶直径为()mm。
A、8
B、20
C、22
D、24
参考答案:C
Not a single song ________ at yesterday’s party.
A.she sang
B.sang she
C.did she sing
D.she did sing
英译汉:“Brightness”,正确的翻译为()
A.光泽
B.霍乱
C.明亮
D.含量