Ultrasonic sounds produce pulsed signals ____various defects in metal can be detected
A. for which
B. of which
C. as a result of which
D. by means of which
Just because I’m ____ to him, my boss thinks he can order me around without giving me any
A. redundant
B. versatile
C. trivial
D. subordinate
销售毛利率计算产品价格的公式是原料成本与()的比值。
A. 1+销售毛利率
B. 1-销售毛利率
C. 1+成本毛利率
D. 1-成本毛利率
假设要通过read语句分别给变量a和b赋值5和7,数据键入的顺序是:57。则()的格式是正确的(表示空格)
A. read(ab)
B. read(b,a)
C. read(ab)
D. read(a,b)