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【多选题】
下列关于防烟面罩的说法正确的是A.
穿戴时，将PBE观察窗朝下，两只手手掌相对，撑开橡胶圈，把头伸进去穿戴好，使得脖子与橡胶圈完全贴合。
B.
当观察窗旁边的信号灯为绿色，说明PBE正在正常供氧。当灯光为红色，说明穿戴不当或者供氧即将结束。要准备取下PBE
C.
如果戴着眼镜使用，后要在里面整理眼镜的位置
D.
取下面罩后，因头发内残留氧气，不要靠近明火，要充分抖散头发
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举一反三
【单选题】when you want to talk to your teacher ,you should _ _ first.
A.
called to her
B.
called up her
C.
call her up
D.
called her up
【单选题】我方接受贵方C109号订单订购1,400件“英雄”牌男式衬衣，请按合同规定的条款开立以我方为受益人的不可撤销即期信用证，时间不晚于2019年5月5日。We confirm having accepted your order No. C109 for 1,400 "Hero" brand men’s shirts. You are kindly requested to open an irre...
A.
on May 5, 2019
B.
before May 5, 2019
C.
on or before May 5, 2019
D.
on and after May 5, 2019
【单选题】If you want to talk to your teacher,you should _____ first. [ ]
A.
called to her
B.
called up her
C.
call her up
D.
called her up
【单选题】If he is determined to do something, he will do it what other people will say.
A.
to this day
B.
in attendance
C.
regardless of
D.
up to
【单选题】我方接受贵方C109号订单订购1,400件“英雄”牌男式衬衣，请按合同规定的条款开立以我方为受益人的不可撤销即期信用证，时间不晚于2019年5月5日。We confirm having accepted your order No. C109 for 1,400 "Hero" brand men’s shirts. You are kindly requested to open an irre...
A.
before May 5, 2019
B.
on or before May 5, 2019
C.
on May 5, 2019
D.
on and after May 5, 2019
【单选题】What does a person need to do if he is determined to get his finances in order?
A.
He must eat less and take less debt.
B.
He has to follow certain discipline, work hard and make tough choices.
C.
He should save money every minute.
D.
He is supposed to be aware of the importance of shaping one's body.
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