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【判断题】
在自然坐标系中,两个坐标的方向总是相互垂直的。A.
正确
B.
错误
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【单选题】I really am not qualified to ()the safety or lack of safety in drinking this water.
A.
valuate
B.
measure
C.
evaluate
D.
vaulte
【简答题】A．calculating B．supposing C．estimating D．regarding
【单选题】Regarding insurance, the ______ is for 110% of the invoice value of the goods that a manufacturer wants to export.
A.
amount
B.
cover
C.
insurance
D.
premium
【单选题】According to the factory safety rules, all accidents _____ be reported to the safety officer.
A.
may
B.
can
C.
would
D.
shall
【单选题】Food Safety and Foodborne Illness Food safety is an increasingly important public health issue. Governments all over the world are intensifying their efforts to _(5l)food safety. These efforts are in ...
A.
meet
B.
improve
C.
provide
D.
reach
【简答题】[A] regarding [B] reflecting [C] revealing [D] representing
【简答题】Which of the following statements regarding time of shipment is both clear and flexible? （ ）
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