概率分析是运用概率论和数理统计原理,对风险因素的概率分布和风险因素对评价指标的影响进行()分析。
A.定性
B.因果
C.定量
D.定性和定量结合
参考答案:C
制作发酵食品,温度一般是 [ ]
A.15℃
B.20℃
C.30℃
D.40℃
If a hydraulic pump on a winch accidentally stops while hoisting,the load will stay suspended because().
A.a check valve will close that prevents reverse circulation
B.a centrifugal counterweight counteracts the force of gravity
C.the electric pump motor cut out
D.the control lever will move to the stop position