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【单选题】
认证技术不包括()。A.
消息认证技术
B.
身份认证技术
C.
中介者认证技术
D.
数字签名技术
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参考解析：
知识点：
皮皮学刷刷变学霸
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【简答题】( 2019 河北沧州模拟 ) 用数字 1 , 2 , 3 , 4 , 5 组成没有重复数字的五位数 , 其中奇数的个数为 ( ) . A . 24 B . 48 C . 60 D . 72
【单选题】My life has been blessed with many important occasions and achievements ________ I am proud. [ ]
A.
of which
B.
in which
C.
for that
D.
in that
【简答题】英译汉：In a society where people are quite similar in many ways,there are fewer occasions英译汉：In a society where people are quite similar in many ways,there are fewer occasions for people to see the need...
【单选题】遥控无人机着陆时,关于顺风着陆描述正确的是
A.
滑跑中，应及时刹车，着陆以免滑跑距离过长
B.
着陆滑跑中，应延后刹车，以免滑跑距离过短
C.
着陆滑跑中，按正常时机刹车即可
【单选题】遥控无人机着陆时,关于顺风着陆描述正确的是
A.
下滑速度较大，舵面效用较强，在拉平过程中，控杆动作应及时、适量，防止拉平高
B.
跟无风情况下一样，不需要特别操作
C.
下滑速度较大，舵面效用较弱，在拉平过程中，控杆动作应及时、适量，防止拉平高
【单选题】He has been told many times that his casual clothes are not ____ for some formal occasions．
A.
innocent
B.
appropriate
C.
temporary
D.
cautious
【单选题】As the years passed, many occasions—birthdays, awards, graduations — __________ with Dad’s flowers.
A.
are marked
B.
were marked
C.
have marked
D.
had marked
【单选题】As the years passed， many occasions―birthdays， awards， graduations ____ with Dad’s flowers. A．are
A.
3.As the years passed， many occasions―birthdays， awards， graduations ____ with Dad’s flowers. A．are marked
B.
were marked
C.
have marked
D.
had marked
相关题目：
【简答题】( 2019 河北沧州模拟 ) 用数字 1 , 2 , 3 , 4 , 5 组成没有重复数字的五位数 , 其中奇数的个数为 ( ) . A . 24 B . 48 C . 60 D . 72