解不等式:(a-1)x>3
解: ① 当a-1>0时,x>;
② 当a=1时,0×x>3,不等式无解;
③ 当a-1<0时,x<。
—Can I smoke here?
—No, at no time in the library.
A.permits smoking
B.does smoking permit
C.smoking is permitted
D.is smoking permitted
依据《海船法定建造检验技术规程》,对抛绳设备,除检查船用产品证书外,还要检查什么?