抽出的注射药液须注明时间,超过()不得使用;启封抽吸的各种溶媒超过()不得使用。
参考答案:2小时、24小时
Several months later, he found Mr. Jackson very difficult ________.
A.to get along with
B.getting along with
C.to get along
D.to be gotten along with
我国国际航行船舶载重线标志中冬季载重线是以标有()的水平线段表示的。
A.D
B.F
C.W
D.Q