膨胀土具有一定的胀缩性，根据自由膨胀率指标δef可确定是否为膨胀土。当δef为下列( )范围时，即可定为膨胀土。
A. δef＜20%
B. 20%≤δef＜30%
C. 30%≤δef＜40%
D. δef≥40%
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The woman believes that Yoshida should be given more support because
A. women are not accepted in the department.
B. women are not as strong as men.
C. Yoshida will find herself in a difficult position if she becomes department head.
D. except them no one will trust her and believe her.
Why does the first man regard it is nice to nominate a woman
A. Women have had trouble for a long time.
B. Women are more qualified than men in this position.
C. Women are better in handling people.
D. Women are more likely to be accepted by others.
甲公司与乙公司签订小家电产品购销合同，总价款为30万元，约定甲公司向乙公司交付一定数额的定金。定金数额符合法律规定的是( )。
A. 30万元
B. 15万元
C. 10万元
D. 5万元
The common depression we experience will not ______.
A. make us feel miserable
B. last longer than two weeks
C. make it difficult for us to do things
D. end until we go to see a therapist
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