【单选题】—Let' s go shopping,shall we? —_________
【判断题】采集新型冠状病毒肺炎患者的咽拭子应该采用二级防护或二级以上防护标准,必须佩戴头面部防护屏和呼吸道防护用品
【单选题】Which of the following statements is correct about the family’s response to Paul’s mockery?
A.
. Only the parents found it entertaining.
B.
Every member except Marriam was amused
C.
The brothers found it hard to appreciate.
D.
. Mariam also thought it was amusing
【单选题】pH =5.28的某溶液,[H+]为5.2480746×10-6 mol•L-1,其结果有效数字位数正确的是:( )
【单选题】小何有一次偷拿水果摊上的橙子被老师叫到了办公室,老师批评他:“为什么总是拿别人的东西?”小何低着头回答:“我也知道不对,就是有时忍不住。”这说明小何缺乏:
【单选题】John goes after what he wants () life.
【单选题】关于下列防护标准表述正确的是 ( )
A.
二级防护:内置重型防化服、全面防静电内衣、正压式空气呼吸器或全防型滤毒罐
B.
二级防护:简易防化服、全面防静电内衣、正压式空气呼吸器或全防型滤毒罐
C.
二级防护:内置重型防化服、全面防静电内外衣、正压式空气呼吸器或氧气呼吸器
D.
二级防护:封闭式防化服、全面防静电内外衣、正压式空气呼吸器或全防型滤毒罐