汞及其无机化合物，以车间或处理设备排水口抽检浓度为准。
参考答案：对
肠外营养根据输入途径可分为经________肠外营养和经________肠外营养。
—_____ do you _____ Japanese food?
—It's very delicious. [ ]
A. What; like
B. How; think
C. What; think of
