18.The new drug will not be put on the market ____ it has proved safe on humans.
18.The new drug will not be put on the market ____ it has proved safe on humans.
智慧职教: 18.The Spring Festival is on _______ day of the Chinese lunar year.
智慧职教: 18.The Spring Festival is on _______ day of the Chinese lunar year.
18.The sight of the clock （ ）me that I was late. A: remind B: reminded C: reminds D: reminding
18.The sight of the clock （ ）me that I was late. A: remind B: reminded C: reminds D: reminding
18.The store had to ________ a number of clerks because sales were down. A: lay out B: lay off C: lay aside D: lay down
18.The store had to ________ a number of clerks because sales were down. A: lay out B: lay off C: lay aside D: lay down
18.The man with grey ______ found two ______ on the plate of fish,which made him angre. A: hairs… hair B: hairs… hairs C: hair… hairs D: hair… hair
18.The man with grey ______ found two ______ on the plate of fish,which made him angre. A: hairs… hair B: hairs… hairs C: hair… hairs D: hair… hair
以下4对B类地址中，属于同一子网的是: 180.81.16.254/18与180.81.17.1/18|180.81.16.254/18与180.81.32.254/18|180.81.16.254/18与180.81.33.1/18|180.81.17.254/18与180.81.32.254/18
以下4对B类地址中，属于同一子网的是: 180.81.16.254/18与180.81.17.1/18|180.81.16.254/18与180.81.32.254/18|180.81.16.254/18与180.81.33.1/18|180.81.17.254/18与180.81.32.254/18
某班学生年龄(单位:岁（）分布如下:18 17 19 18 19 20 18 19 19 18 19 18 19 18 17 21 18 1919 18 17 18 19 18 19 20 18 20 19 19 19 18 19 18 17 21 18 19 20 18 18 17 20 17 19 20 19 18 19 18要求:(1（）以学生年龄为分组标志编制分布数列（2）分别按向上和向下两种形式进行频数累计并列表说明。
某班学生年龄(单位:岁（）分布如下:18 17 19 18 19 20 18 19 19 18 19 18 19 18 17 21 18 1919 18 17 18 19 18 19 20 18 20 19 19 19 18 19 18 17 21 18 19 20 18 18 17 20 17 19 20 19 18 19 18要求:(1（）以学生年龄为分组标志编制分布数列（2）分别按向上和向下两种形式进行频数累计并列表说明。
表达式 -18 || 18 的值是________。表达式-18 && 18 的值是________
表达式 -18 || 18 的值是________。表达式-18 && 18 的值是________
表达式 -18 || 18 的值是________。表达式-18
表达式 -18 || 18 的值是________。表达式-18
21个18比20个18多了（）个18，20个18是（），21个18是（）。
21个18比20个18多了（）个18，20个18是（），21个18是（）。