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【简答题】
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皮皮学刷刷变学霸
举一反三
【单选题】关于产褥感染的诱因，下列哪项描述不正确（）
A.
妊娠晚期性交
B.
孕期贫血及营养不良
C.
产前产后出的血、宫腔填纱、产道异物
D.
过早静脉滴注子宫收缩剂
E.
各种产科手术操作、产道损伤
【单选题】以下关于IP报文首部信息说法错误的是____。
A.
IP报文首部中固定部分的长度为20字节。
B.
IP首部中TTL最大值为255
C.
如果高层使用TCP，那么IP报文首部中协议字段值为17
D.
IP报文首部中IP报文最小长度为46字节
【单选题】听力原文：Mary was so exhausted last night that she dropped off to sleep in the chair instead of getting up and going to bed. (28)
A.
She dropped off the chair last night.
B.
She went to buy some bedroom furniture.
C.
She didn't sleep last night.
D.
She slept in the chair rather than on the bed.
【简答题】以下关于IP报文首部信息说法错误的是（ ）A. Normal 0 7.8 磅 0 2 false false false EN-US ZH-CN X-NONE ...
【单选题】— Mike wants to know if _____ a picnic tomorrow. — Yes. But if it _____, we'll visit the museum instead. [ ]
A.
you have; will rain
B.
you will have; will rain
C.
you will have; rains
D.
will you have; rains
【单选题】以下关于 IP 报文首部信息说法错误的是( )。
A.
IP 报文首部中固定部分的长度为 20 字节
B.
IP 首部中 TTL 最大值为 255
C.
如果高层使用 TCP 那么 IP 报文首部中协议号部分值为 17
D.
IP 报文首部中 IP 报文最小长度为 46 字节
【单选题】Which of the following may contribute to a longer life span?
A.
Showing adequate trust instead of suspicion of others.
B.
Eating the food low in fat and driving with great care.
C.
Cultivating an optimistic personality and never losing heart.
D.
Looking on the bright side and developing a balanced level of risk.
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