焊机一次侧电源线长度最大不得超过()M
A.5
B.10
C.15
D.20
参考答案:A
There ______two parties for the exchange students from the UK next week.
A.is going to be
B.are going to be
C.will have
D.are going to have
下述女性体温的描述,不正确的是
A.排卵后体温升到较高水平
B.有周期波动
C.排卵前体温较低
D.排卵日体温回升