注射用无菌粉针使用前须加溶媒溶解，即加：
A．蒸馏水
B．去离子水
C．灭菌注射用水
D．纯化水
E．常水
参考答案：C
照片灰雾产生的因素不包括（）
A.片基
B.散射线
C.滤线器
D.显影处理
E.焦点外X线
In 1724, ______ published, under the pseudonym of Drapier, a series of letters that called on the whole country to refuse the newly-minted English copper coins which would further debase the coinage of the already poverty-stricken country.
A. Jonathan Swift B. Charles DickensC. Edmund Spenser D. George Bernard Shaw
