已知一个角的补角等于这个角的余角的3倍,则这个角的度数是______.
设这个角的度数为x.
即180°-x=3(90°-x)
则x=45°.
The opening ceremony has been put off_____ the bad weather.
A.in case of
B.in spite of
C.instead of
D.because of
常压灌装机:()、进出瓶拨轮、()、灌装阀、主轴及传动系统。