填空题:若三角形三边之比为2：3：4，则此三角形的最小角为弧度 ．

A -5 B -4 C 3 D 1

A <img width="113" height="40" src="https://www.beizhujiaoyu.com/uploads/202208/20190918212137_5578.png" /> B <img width="92" height="39" src="https://www.beizhujiaoyu.com/uploads/202208/20190918212139_5422.png" /> C <img width="111" height="38" src="https://www.beizhujiaoyu.com/uploads/202208/20190918212139_7141.png" /> D <img width="235" height="40" src="https://www.beizhujiaoyu.com/uploads/202208/20190918212141_6984.png" />

A 0．76^0.12<1 B <img width="93" height="38" src="https://www.beizhujiaoyu.com/uploads/202208/20190918212127_5131.png" /> C loga(a+1)<log_(a+1)a D 2^0.32<2^0.31

A <img width="78" height="20" src="https://www.beizhujiaoyu.com/uploads/202208/20190918212120_7609.png" /> B <img width="84" height="19" src="https://www.beizhujiaoyu.com/uploads/202208/20190918212120_9484.png" /> C <img width="48" height="15" src="https://www.beizhujiaoyu.com/uploads/202208/20190918212122_8859.png" /> D <img width="48" height="15" src="https://www.beizhujiaoyu.com/uploads/202208/20190918212123_1203.png" />

A ƒ(x)=2x+1，点x=-1 B ƒ(x)=ax²+bx+C，点x=0 C <img width="302" height="45" src="https://www.beizhujiaoyu.com/uploads/202208/20190918212141_9184.png" /> D <img width="234" height="38" src="https://www.beizhujiaoyu.com/uploads/202208/20190918212143_8703.png" />

A 24种 B 12种 C 16种 D 8种<br/>

A <img width="38" height="21" src="https://www.beizhujiaoyu.com/uploads/202208/20190918212842_5405.png" > B 4 C <img width="39" height="21" src="https://www.beizhujiaoyu.com/uploads/202208/20190918212844_5405.png" > D 16<br/>

A <img width="107" height="39" src="https://www.beizhujiaoyu.com/uploads/202208/20190918212751_1190.png" > B <img width="81" height="39" src="https://www.beizhujiaoyu.com/uploads/202208/20190918212753_0877.png" > C <img width="81" height="39" src="https://www.beizhujiaoyu.com/uploads/202208/20190918212753_2908.png" > D <img width="107" height="39" src="https://www.beizhujiaoyu.com/uploads/202208/20190918212755_3377.png" ><br/>

A 2t-3m+1=0 B 2t+3m+1=0 C 2t-3m-1=0 D 2t+3m-1=0<br/>

A y=log₂(x+1) B y=log₂(x+3) C y=log₂(x+2)-1 D y=log₂(x+2)+1<br/>