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【判断题】
结构力学的主要研究对象是杆系结构。（ ）A.
正确
B.
错误
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Since Wallerstein's study, ______.
A.
there are fewer divorces
B.
children of divorce no longer get therapy
C.
times and attitudes toward divorce have changed
D.
people don't talk about divorce any more
【单选题】Nine temporary hospitals with more than 6,900 beds were operational. ( )
A.
hospitals
B.
Nine temporary hospitals
C.
Nine temporary hospitals with more than 6,900 beds
【单选题】Google has made a huge progress in autonomous driving in a longe period of time.
A.
√
B.
╳
【单选题】Yes, ______ is difficult to find a job nowadays, but _____ is more difficult is try to find such a job with a high salary but little things to do.
A.
it, it
B.
what, what
C.
it, what
D.
what, it
【简答题】不属于电子商务系统组成成员的是A. A. 银行(包括商户银行,又称收单银行;发卡银行;支付网关) B. A. 销售中心(包括电子 商城、服务提供商) C. A. 认证中心(包括身份认证、诚信认证、时间认证) D. A. 公共政策
【单选题】不属于电子商务系统组成成员的是
A.
客户（包括购物单位、消费者）
B.
供货方（包括厂家、商户、电子商城）
C.
相关的安全交易协议（SET、SSL、S/MIME、S-HTTP、HTTPS等）
D.
银行（包括商户银行，又称收单银行；支付网关）
【单选题】Some sufferers will quickly be restored to perfect health, ______ others will take a longer time.
A.
which
B.
where
C.
when
D.
whereas
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