题目内容

()todamagetheprotectivecoatingontheinnersideoftheshell.

A. Caretobenottaken
B. Carenottobetaken
Caretobetakennot
D. Notcaretobetaken

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Thechiefengineersuggeststhatthesecondengineer()adeadlineforhandingintheworkplan.

A. willset
B. shallset
C. set
D. sets

一般情况,通信铁塔设计使用年限为()年,结构安全等级为()级。

A. 50;一
B. 25;一
C. 50;二
D. 25;二

下列词形变化中,运用附加手段的是()。

A. pen-pens
B. Long-Longer
C. foot-feet
D. man-men
E. go-went

Icannottakeanyactionstoavoidclosequarterssituationwithyou,becauseyournavigationlights().

A. isnotvisible
B. arenotinvisible
C. arenotvisible
D. caneasilybeseen

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