管道支架、吊架制作、组装后,外形尺寸偏差不得大于()。
A.0.5mm
B.1.5mm
C.2mm
D.3.5mm
参考答案:D
Knowing their son failed in the exam, the parents stood there, ________.
A.looked disappointed
B.looking disappointed
C.looked disappointing
D.looking disappointing
一般而言,企业的速动比率越高,说明其短期债务的债权 * * 益的安全程度越低。()