地上式SQ100型消防水泵接合器的水带接口为()。
(A)13mm
(B)19mm
(C)65mm
(D)80mm
参考答案:C
I knew he failed in the final exam the moment I ______ him crying alone in the classroom.[ ]
A. at the sight of
B. caught sight of
C. in sight of
D. lost sight of
SS6B型电力机车单个牵引电机功率为()。
A、800kW
B、900kW
C、1000kW
D、1025kW