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【单选题】
无菌操作中,正确的是A.
双手擦过酒精棉,也只能接触无菌培养皿的外部
B.
接种棒用酒精棉擦拭就可以直接接种了
C.
接种棒在紫外灯下照射了半小时,可以直接接种了
D.
双手擦过酒精棉,可以接触无菌培养皿内部
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举一反三
【单选题】While going out for an expedition, we need some power banks to back us _____.
A.
through
B.
on
C.
in
D.
up
【单选题】Power banks with built-in lithium batteries ______.
A.
can be carried in the carry-on baggage only
B.
can be carried in the checked baggage only
C.
can be carried in neither carry-on baggage nor checked baggage
D.
can be carried in either carry-on baggage or checked baggage
【简答题】Spare lithium batteries and portable battery chargers including power banks must be placed in the ________ only.
【单选题】Power banks with built-in lithium batteries ______.
A.
can be carried in the carry-on baggage only
B.
can be carried in the checked baggage onl
C.
can be carried in neither carry-on baggage nor checked baggage
D.
can be carried in either carry-on baggage or checked baggage
【单选题】Portable chargers or power banks containing a lithium ion battery must be packed in ___________ bags.
A.
carry-on
B.
checked
C.
check
D.
portable
【判断题】When you go through the security check, you can take 3 power banks with you.
A.
正确
B.
错误
【判断题】Spare lithium batteries and power banks must not be packed in carry-on baggage.
A.
正确
B.
错误
【简答题】在Fe-Fe3C相图中，PSK线称为（ ）线也称为A1线。
【简答题】在Fe-Fe 3 C相图中，GS线也称为A cm 线。
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