糖衣片
A．稀盐酸B．稀醋酸C．稀硫酸D．甲基红指示液E．醋酸盐缓冲液(pH3.5)
参考答案：C
影响粘结力的大小，下列哪项提法是错误的（）
A.无机盐粘结剂明显小于树脂类粘结剂
B.与粘结面积成正比
C.与被粘结面的清洁度成正比
D.与粘结剂厚度成正比
E.与粘结剂厚度成反比
-Mr. Green, __________ you __________ the Great Wall last Sunday?
-No, but I'll visit it next week.[ ]
A. will; go to
B. have; been to
C. did; go to
D. have; gone to
